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Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Modeling the structure of coal water slurry (CWS) sprays  

E-Print Network [OSTI]

This thesis describes a model of coal water slurry (CWS) sprays and presents new experimental data for CWS viscosities. The model is based on the aerodynamic theory of spray atomization which has been successfully used for Diesel sprays. However...

Prithiviraj, Manikandan

2012-06-07T23:59:59.000Z

2

Optimization of a Fixed Spraying System for Commercial High-Density Apple Plantings Final Report 2007  

E-Print Network [OSTI]

Optimization of a Fixed Spraying System for Commercial High-Density Apple Plantings Final Report and fruit coverage issues are a research priority in tree fruits and apples in particular. Preliminary Work. Preliminary trials were conducted in two blocks each of Red Delicious and Empire apples on M.9 dwarfing stock

Agnello, Arthur M.

3

EFFECTS OF WATER SPRAYS AND SCRUBBER EXHAUST ON FACE METHANE CONCENTRATIONS  

E-Print Network [OSTI]

methane levels. KEYWORDS Ventilation, water sprays, methane, coal mining, dust scrubber INTRODUCTIONChapter 65 EFFECTS OF WATER SPRAYS AND SCRUBBER EXHAUST ON FACE METHANE CONCENTRATIONS Ch.D. Taylor-mounted scrubber and water sprays can reduced methane levels at the face. The current research was conducted

Saylor, John R.

4

Heat transfer through a water spray curtain under the effect of a strong radiative source  

E-Print Network [OSTI]

Heat transfer through a water spray curtain under the effect of a strong radiative source P. Boulet - mail Pascal.Boulet@lemta.uhp-nancy.fr Keywords : heat transfer, radiative transfer, vaporization, convection, water spray Abstract Heat transfer inside a participating medium, made of droplets flowing in gas

Paris-Sud XI, Université de

5

Numerical simulation on the influence of water spray in thermal plasma treatment of CF4 gas  

Science Journals Connector (OSTI)

Nitrogen thermal plasma generated by a non-transferred DC arc plasma torch was used to decompose tetrafluoromethane (CF4). In the thermal decomposition process, water was used as a chemical reactant source. Two kinds of water spray methods were compared: water spray directly to the arc plasma flame and indirectly to the reactor tube wall. Although the same operating conditions of input power, waste gas, and sprayed water flow rate were employed for each water spray methods, a relatively higher decomposition rate was achieved in the case of water spray to the reactor wall. In order to investigate the effects of water spraying direction on the thermal decomposition process, a numerical simulation on the thermal plasma flow characteristics was carried out considering water injection in the reactor. The simulation was performed using commercial fluid dynamics software of the FLUENT, which is suitable for calculating a complex flow. From the results, it was revealed that water spray to the reactor wall and use of a relatively small quantity of water are more effective methods for decomposition of CF4, because a sufficiently high temperature area and long reaction time can be maintained over large area.

Tae-Hee Kim; Sooseok Choi; Dong-Wha Park

2012-01-01T23:59:59.000Z

6

Droplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H. Callahan, and Akos Vertes*,  

E-Print Network [OSTI]

conductivity, dielectric constant, surface tension, viscosity, and density) and on the spraying conditionsDroplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H generated from methanol-water mixtures. We investigated spraying conditions close to those of electrospray

Vertes, Akos

7

Characterization of coal-water slurry fuel sprays generated by an electronically-controlled accumulator fuel injector.  

E-Print Network [OSTI]

??Experiments have been completed to characterize coal-water slurry sprays generated by an electronically-controlled accumulator fuel injection system for a diesel engine. The sprays were injected… (more)

Payne, Stephen Ellis

2012-01-01T23:59:59.000Z

8

Characterization of coal-water slurry fuel sprays generated by an electronically-controlled accumulator fuel injector  

E-Print Network [OSTI]

Experiments have been completed to characterize coal-water slurry sprays generated by an electronically-controlled accumulator fuel injection system for a diesel engine. The sprays were injected into a pressurized chamber equipped with quartz...

Payne, Stephen Ellis

2012-06-07T23:59:59.000Z

9

Numerical simulation of an innovated building cooling system with combination of solar chimney and water spraying system  

Science Journals Connector (OSTI)

In this study, passive cooling of a room using a solar chimney and water spraying system in the room ... a hot and arid city with very high solar radiation). The performance of this system ... some parameters suc...

Ramin Rabani; Ahmadreza K. Faghih; Mehrdad Rabani; Mehran Rabani

2014-11-01T23:59:59.000Z

10

Model studies to investigate the effects of fixed streamlines on water flooding performance  

E-Print Network [OSTI]

MODEL STUDIES TO INVESTIGATE THE EFFECTS OF FIXED STREAMLINES ON WATER FLOODING PERFORMANCE A Thesis by Axel Venton Green Submitted to the Graduate College of the Texas ASrM University in partial fulfillment of the requirements...

Green, Axel Venton

1964-01-01T23:59:59.000Z

11

Sprays and Spraying  

E-Print Network [OSTI]

TEXAS AGRICULTURAL EXPERIMENT STATION -- BULLETIN NO. 187 MARCH, 1916 - DIVISION OF ENTOMOLOGY Sprays and S-praying POSTOFFICE: COLLEGE STATION, BRAZOS COUNTY, TEXAS AUSTIN. TEXAS VON BOECKMANN-JONES CO., PRINTERS 1916 [Blank Page... in Original Bulletin] TEXAS AGRICULTURAL EXPERIMENT STATION BULLETIN NO. 187 MARCH, 1916 - DIVISION OF ENTOMOLOGY Sprays and Spraying BY F. B. PADDOCK, B. S. E. Entomologist in Charge; State Entomologist POSTOFFICE: COLLEGE STATION, BRAZOS COUNTY...

Paddock, F.B. (Floyd B.)

1916-01-01T23:59:59.000Z

12

On radiative transfer in water spray curtains using the Discrete Ordinates Method  

E-Print Network [OSTI]

addressed in conditions similar to devices used in fire protection systems. The radiation propagation from solutions involved in fire protection systems. In this case, the expected aim is to protect given devices of the spray efficiency would be a useful tool for people concerned with fire protection. Our group is involved

Paris-Sud XI, Université de

13

Fixed-flowrate total water network synthesis under uncertainty with risk management  

Science Journals Connector (OSTI)

Abstract This work addresses the problem of integrated water network synthesis under uncertainty with risk management. We consider a superstructure consisting of water sources, regenerators, and sinks that leads to a mixed-integer quadratically-constrained quadratic program (MIQCQP) for a fixed-flowrate total water network synthesis problem. Uncertainty in the problem is accounted for via a recourse-based two-stage stochastic programming formulation with discrete scenarios that gives rise to a multiscenario MIQCQP comprising network design in the first stage and its operation in the second stage acting as recourse. In addition, we extend the model to address risk management using the Conditional Value-at-Risk (CVaR) metric. Because a large number of scenarios is often required to capture the underlying uncertainty of the problem, causing the model to suffer from the curse of dimensionality, we propose a stepwise solution strategy to reduce the computational load. We illustrate this methodology on a case study inspired from the water network of a petroleum refinery in Malaysia. The presence of nonconvex bilinear terms necessitates the use of global optimization techniques for which we employ a new global MIQCQP solver, GAMS/GloMIQO and verify the solutions with BARON. Our computational results show that total water network synthesis under uncertainty with risk management problems can be solved to global optimality in reasonable time.

Cheng Seong Khor; Benoit Chachuat; Nilay Shah

2014-01-01T23:59:59.000Z

14

Spray Painting  

Science Journals Connector (OSTI)

The use of robots for spray painting was highlighted at the 1982 World Fair, with the demonstration of a Tokico Amstar Painting Robot (see Figure 1). The use of robots for spray painting has been growing worldwid...

Richard K. Miller CMfgE

1989-01-01T23:59:59.000Z

15

Wind-tunnel simulation of field dispersion tests (by the U.K. health and safety executive) of water-spray curtains  

Science Journals Connector (OSTI)

Field trials of water-spray curtain tests performed by the (British) Health and Safety Executive and designated by HSE 41 and HSE 46 were modeled at a scale ratio of 1:28.9 in an atmospheric boundary-layer win...

R. N. Meroney; D. E. Neff; G. Heskestad

16

Vacuum plasma spraying of high-performance electrodes for alkaline water electrolysis  

Science Journals Connector (OSTI)

Electrode coatings for advanced alkaline water electrolysis were produced by applying the vacuum plasma...3O4 matrix composite layers were developed for the anodic oxygen evolution reaction. For the preparation o...

G. Schiller; R. Henne; V. Borck

1995-06-01T23:59:59.000Z

17

Preserve the Investment-Antibiological Spray  

E-Print Network [OSTI]

"PRESERVE THE INVESTMENT - ANTIBIOLOGICAL SPRAY" by ROBERT REIDENBACH Spraying Services, Inc. Houston, TX ABSTRACT Annual preservative spray applications to the plenum area combined with a good water treatment program will extend... the maintenance free life of the cooling tower. This is accomplished by pre venting internal wood decay which can result in unexpected structural failure and periodic repairs. The preservative spray procedure will also minimize the biological fouling...

Reidenbach, R.

18

Biological removal of organic constituents in quench water from a slagging, fixed-bed coal-gasification pilot plant  

SciTech Connect (OSTI)

This study is part of an effort to assess the efficiency of activated-sludge treatment for removal of organic constituents from high-Btu coal-gasification pilot-plant quench waters. A sample of raw-gas quench water was obtained from the Grand Forks Energy and Technology Center's pilot plant, which employs the slagging, fixed-bed gasification process. The quench water generated in the processing of Indian Head lignite was pretreated to reduce ammonia and alkalinity, and then diluted and subjected to long-term biological treatment, followed by detailed characterization and analysis of organic constituents. The pretreated (influent) and treated (effluent) samples were extracted using a methylene chloride, pH-fractionation method to obtain acid, base, and neutral fractions, which were analyzed by capillary-column gas chromatography/mass spectrometry (GC/MS). Over 99% of the total extractable and chromatographable organic material in the influent acid fraction was composed of phenol and alkylated phenols. Biological treatment removed these compounds almost completely. Major components of the influent base fraction were alkylated pyridines, anilines, aminopyrroles, imidazoles and/or pyrazoles, diazines, and quinolines. Removal efficiency of these compounds ranged between 90 and 100%. The influent neutral fraction was composed mainly of cycloalkanes, cycloalkenes, naphthalene, indole, acetophenone, and benzonitrile. Alkylated benzenes were generally absent. Removal efficiencies of these compounds were generally very good, except for certain alkylated cycloalkanes and cycloalkenes. Results are compared with those of a similar study on HYGAS coal-gasification quench water.

Stamoudis, V C; Luthy, R G

1980-02-01T23:59:59.000Z

19

Spray Painting Applications  

Science Journals Connector (OSTI)

Spray painting using an industrial robot to manipulate a spray painting gun was one of the first robot applications to become established in industry and...

E. Appleton; D. J. Williams

1987-01-01T23:59:59.000Z

20

Toxicity assessment of water and sediment elutriates from fixed-station ambient water quality network stations, 1986, 1987, 1988, and 1989  

SciTech Connect (OSTI)

Toxicity biomonitoring of water column and sediment toxicity was conducted at six fixed network stations from 1986 through 1989. Stations were located on the Holston River, Bear Creek (Pickwick Reservoir), Hiwassee River, Emory River, Nolichucky River, and French Broad River at locations chosen to represent those sub-basins. Tests evaluated acute and chronic responses of larval fathead minnow survival and growth and Ceriodaphnia survival and reproduction to water and sediment elutriates collected from these sites. Samples were collected once each year during summer. Neither water nor sediment elutriates from the French Broad River were toxic during the study period. Water column toxicity (chronic) occurred in Bear Creek in 1986 and in the Nolichucky River in 1987. Sediment elutriate toxicity occurred once during the study period in the Emory (1987) and Nolichucky (1988) Rivers. Sediments from the Holston and Hiwassee Rivers were toxic two times each. Hiwassee River sediment exhibited >1.3 chronic toxicity units in 1987 and 1989 (were toxic at the lowest dilution tested). Holston River sediment toxicity occurred during the most recent two years of testing. Results from the Holston and Hiwassee Rivers may indicate a toxics problem in the sub-basin. No acute toxicity occurred during the study. 4 refs., 2 tabs.

Moses, J.; Wade, D.C.

1991-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Impact of Sea Spray on Air–Sea Fluxes. Part II: Feedback Effects  

Science Journals Connector (OSTI)

This paper presents estimations for the transfer of momentum, heat, and water mass between the air and the sea. The results from Lagrangian stochastic simulations of sea spray drops (see Part I), along with two sea spray generation functions, are ...

James A. Mueller; Fabrice Veron

2014-11-01T23:59:59.000Z

22

Invisible fingerprints Spray bottle  

E-Print Network [OSTI]

Invisible fingerprints Procedure Materials Ninhydrin Methanol Spray bottle Index card Hairdryer the surface and leave behind an impression of the finger's ridge pattern. These prints are invisible

Weston, Ken

23

Spray structures and vaporizing characteristics of a GDI fuel spray  

Science Journals Connector (OSTI)

The spray structures and distribution characteristics of liquid and vapor phases in non-evaporating and evaporating Gasoline Direct Injection (GDI) fuel sprays were investigated using Laser Induced...

Dong-Seok Choi; Gyung-Min Choi; Duck-Jool Kim

2002-07-01T23:59:59.000Z

24

fixed2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Part Deux Part Deux Painless Physics Articles BEAM COOLING August 2, 1996 By Leila Belkora, Office of Public Affairs ACCELERATION August 16, 1996 By Dave Finley, Accelerator Division Head RF August 30, 1996 By Pat Colestock, Accelerator Division FIXED TARGET PHYSICS September 20, 1996 By Peter H. Garbincius, Physics Section FIXED TARGET PHYSICS PART DEUX October 16, 1996 By Peter H. Garbincius, Physics Section and Leila Belkora, Office of Public Affaris CROSS SECTION November 1, 1996 By Doreen Wackeroth, Theoretical Physics Edited by Leila Belkora, Office of Public Affaris MAGNETS PART I November 15, 1996 By Hank Glass, Technical Support Section Edited by Donald Sena, Office of Public Affairs MAGNETS PART II January 10, 1997 By Hank Glass, Technical Support Section Edited by Donald Sena, Office of Public Affairs

25

Spray Rolling Aluminum Strip  

SciTech Connect (OSTI)

Spray forming is a competitive low-cost alternative to ingot metallurgy for manufacturing ferrous and non-ferrous alloy shapes. It produces materials with a reduced number of processing steps, while maintaining materials properties, with the possibility of near-net-shape manufacturing. However, there are several hurdles to large-scale commercial adoption of spray forming: 1) ensuring strip is consistently flat, 2) eliminating porosity, particularly at the deposit/substrate interface, and 3) improving material yield. Through this program, a new strip/sheet casting process, termed spray rolling, has been developed, which is an innovative manufacturing technique to produce aluminum net-shape products. Spray rolling combines the benefits of twin-roll casting and conventional spray forming, showing a promising potential to overcome the above hurdles associated with spray forming. Spray rolling requires less energy and generates less scrap than conventional processes and, consequently, enables the development of materials with lower environmental impacts in both processing and final products. Spray Rolling was developed as a collaborative project between the University of California-Davis, the Colorado School of Mines, the Idaho National Engineering and Environmental Laboratory, and an industry team. The following objectives of this project were achieved: (1) Demonstration of the feasibility of the spray rolling process at the bench-scale level and evaluation of the materials properties of spray rolled aluminum strip alloys; and (2) Demonstration of 2X scalability of the process and documentation of technical hurdles to further scale up and initiate technology transfer to industry for eventual commercialization of the process.

Lavernia, E.J.; Delplanque, J-P; McHugh, K.M.

2006-05-10T23:59:59.000Z

26

Spot-spraying Johnsongrass.  

E-Print Network [OSTI]

of naphtha and diesel fuel oil is the oil spray most generally used. Various other oil mixtures may be used for economy, for increased contact toxicity, or for a combination of contact toxicity and residual effectiveness. Oil sprays kill on contact... mixture of 40 pounds of sodium TCA and 20 pounds of sodium dalapon can be used for spot-treating sparsely infested cotton fields. It is a knock-out spray under some conditions. Maleic hydrazide (MH-30) is a translocated growth inhibitor with no residual...

Rea, H. E.

1958-01-01T23:59:59.000Z

27

From Emergency to Fix: Point-of-Use Water Filtration Technology in Colonias Along the United States-Mexico Border  

E-Print Network [OSTI]

and sanitation, health care, electricity and paved roads (Korc and Ford 2013, pg. 80). In August 2011, the EPA supported and promoted POU devices in a regional conference (“BienESTAR”) attended by stakeholders and researchers at the University of Texas – El... of the millions of people across the globe without access to it. In September 2010, the UN Human Rights Council confirmed that it was legally binding upon states to respect, protect, and fulfill the human “right to safe and clean drinking water and sanitation...

Vandewalle, Emily Lauren

2014-04-30T23:59:59.000Z

28

Modeling of engine sprays  

SciTech Connect (OSTI)

Atomization and full-cone sprays from single cylindrical orifices are considered. The following subjects are reviewed: the structure of the breakup region; the structure of the far field; modern models that, given the outcome of the breakup process, compute the steady and transient of sprays; some comparisons with detailed measurements; and some practical applications. The following conclusions are reached: the spray breakup and the development regions are the most relevant in engine applications; the inner structure of the breakup region is still largely unknown; two- and three-dimensional spray models are available but remain mostly untested, particularly in their vaporization and combustion components, in part because of a lack of accurate measurements in controlled engine-type environments; engine applications of such models are, nonetheless, recommended for very valuable learning, interpretative, and exploratory studies, but not for predictions.

Bracco, F.V.

1985-01-01T23:59:59.000Z

29

Metal atomization spray nozzle  

DOE Patents [OSTI]

A spray nozzle for a magnetohydrodynamic atomization apparatus has a feed passage for molten metal and a pair of spray electrodes mounted in the feed passage. The electrodes, diverging surfaces which define a nozzle throat and diverge at an acute angle from the throat. Current passes through molten metal when fed through the throat which creates the Lorentz force necessary to provide atomization of the molten metal. 6 figures.

Huxford, T.J.

1993-11-16T23:59:59.000Z

30

The air plasma spraying  

Science Journals Connector (OSTI)

The air plasma spraying is characterized by using of a compressed air as a plasma forming gas. Here is shown the application of benefits of the present technology compared with other spraying process. The creation of the present process was possible due to a reliable plasma torch and certain condition of heating and deposition of powder materials on a work. Plasma torch develops a power up to 50 kW and can work during 14 hours without replacement of a cathode and during 25 hours as for an anode what is acceptable for industrial application. When spraying of coatings a minimum waste of alloying elements is attained with slight increase of oxygen in coating which is comparable with argon plasma spraying in the open. In certain cases the air plasma spraying allows to obtain more perfect coatings and at high performance. The present method finds large application at restoration and strengthening of machine parts, at forming of components etc. The air plasma spraying provides high quality coatings at low cost of components.

Valery S. Klubnikin

1993-01-01T23:59:59.000Z

31

Hydroxide absorption heat pumps with spray absorber  

SciTech Connect (OSTI)

The absorber is one of the most expensive components of an absorption heat pump or chiller, respectively. In order to reduce the cost of a heat exchanger, much effort is invested into searching for additives for heat transfer enhancement. Another way to reduce heat exchanger cost, especially for machines with low capacities, is to use an adiabatic spray absorber. The basic principles of the spray absorber is to perform heat and mass transfer separated from each other in two different components. In this way the heat can be rejected effectively in a liquid-liquid heat exchanger, whereas the mass transfer occurs subsequently in a simple vessel. The spray technique can not only save heat exchanger cost in conventional absorption systems working with water and lithium bromide, it also allows the use of quite different working fluids such as hydroxides, which have lower heat transfer coefficients in falling films. Moreover, the separated heat transfer can easily be performed in a liquid-to-air heat exchanger. Hence it is obvious to use hydroxides that allow for a high temperature lift for building an air-cooled chiller with spray absorber. In this presentation theoretical and experimental investigations of the spray absorber as well as the setup will be described. Finally, possible applications will be outlined.

Summerer, F.; Alefeld, G. [Technische Univ. Muenchen, Munich (Germany). Physics Dept.; Zeigler, F.; Riesch, P. [Bayerisches Zentrum fuer Angewandte Energieforschung, Munich (Germany)

1996-11-01T23:59:59.000Z

32

COANDA-ASSISTED SPRAY MANIPULATION IMPLEMENTATION TO PLASMA SPRAY  

E-Print Network [OSTI]

speed rotation on a vectored jet. A 2-piece CSM collar was retrotted to a Praxair SG-100 plasma spray

Smith, Barton L.

33

Droplets Behavior of Hollow-Cone Spray in a Non-Condensable Environment  

SciTech Connect (OSTI)

The characteristics of droplets in a water hollow-cone spray from nozzles 1.1 mm and 3.6 mm in diameter in an air environment have been investigated experimentally. The dual phase Doppler anemometry (PDA) system was used to measure the size and two velocity components of individual spherical particles. The liquid spray geometry, including spray breakup length and spray angle were also obtained experimentally. The mechanism and the influence of these parameters on a hollow cone spray flow were described. (authors)

Minoru Takahashi; Shin-ichi Kitagawa [Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152 (Japan); Suizheng Qiu [Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an, Shaanxi, 710049 (China)

2002-07-01T23:59:59.000Z

34

Parameter optimization for spray coating  

Science Journals Connector (OSTI)

The aim of planning path-oriented spray-coating processes is to find a time-dependent continuous sequence of spray gun configurations so that a coating of desired thickness is achieved when executing the sequence. A novel approach to solving the planning ... Keywords: Optimization, Robot path planning, Thermal spray coating

Alexander Kout; Heinrich Müller

2009-10-01T23:59:59.000Z

35

A spray-suppression model for turbulent combustion  

SciTech Connect (OSTI)

A spray-suppression model that captures the effects of liquid suppressant on a turbulent combusting flow is developed and applied to a turbulent diffusion flame with water spray suppression. The spray submodel is based on a stochastic separated flow approach that accounts for the transport and evaporation of liquid droplets. Flame extinguishment is accounted for by using a perfectly stirred reactor (PSR) submodel of turbulent combustion. PSR pre-calculations of flame extinction times are determined using CHEMKIN and are compared to local turbulent time scales of the flow to determine if local flame extinguishment has occurred. The PSR flame extinguishment and spray submodels are incorporated into Sandia's flow fire simulation code, VULCAN, and cases are run for the water spray suppression studies of McCaffrey for turbulent hydrogen-air jet diffusion flames. Predictions of flame temperature decrease and suppression efficiency are compared to experimental data as a function of water mass loading using three assumed values of drop sizes. The results show that the suppression efficiency is highly dependent on the initial droplet size for a given mass loading. A predicted optimal suppression efficiency was observed for the smallest class of droplets while the larger drops show increasing suppression efficiency with increasing mass loading for the range of mass loadings considered. Qualitative agreement to the experiment of suppression efficiency is encouraging, however quantitative agreement is limited due to the uncertainties in the boundary conditions of the experimental data for the water spray.

DESJARDIN,PAUL E.; TIESZEN,SHELDON R.; GRITZO,LOUIS A.

2000-02-14T23:59:59.000Z

36

Engines - Fuel Injection and Spray Research - Diesel Sprays  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diesel Sprays Diesel Sprays Chris Powell and fuel spray xray beamline Christopher Powell, an engine research scientist, fits a specially designed X-ray pressure window to a high-pressure chamber used in diesel spray research. These windows allow Argonne researchers to use X-rays to probe diesel sprays under the high-density conditions found in diesel engines. Diesel sprays Diesel engines are significantly more fuel-efficient than their gasoline counterparts, so wider adoption of diesels in the U.S. would decrease the nationÂ’s petroleum consumption. However, diesels emit much higher levels of pollutants, especially particulate matter and NOx (nitrogen oxides). These emissions have prevented more manufacturers from introducing diesel passenger cars. Researchers are exploring ways to reduce pollution formation in the engine

37

Coanda-Assisted Spray Manipulation Collar for a Commercial Plasma Spray Gun  

E-Print Network [OSTI]

-assisted Spray Manipulation (CSM) collar was retrofitted to a Praxair SG-100 plasma spray gun. The CSM device

Smith, Barton L.

38

Onsite Wastewater Treatment Systems: Spray Distribution System  

E-Print Network [OSTI]

Spray distribution systems for wastewater are much like lawn sprinkler systems, in that they spray treated wastewater over the surface of a yard. This publication explains how spray distribution systems work, what their design requirements are...

Lesikar, Bruce J.

2008-10-23T23:59:59.000Z

39

Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...  

Broader source: Energy.gov (indexed) [DOE]

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary...

40

Physicochemical Factors Influencing the Adjuvant-Enhanced Spray Deposition and Coverage of Foliage-Applied Agrochemicals  

Science Journals Connector (OSTI)

Most pesticides are applied to foliage as sprays of water-based formulations atomised through hydraulic nozzles. It is well known that this method of transfer is inherently inefficient, resulting in only a sma...

P. J. Holloway

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Fix-Up Loan | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Fix-Up Loan Fix-Up Loan Fix-Up Loan < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Heating Insulation Windows, Doors, & Skylights Energy Sources Buying & Making Electricity Solar Wind Sealing Your Home Appliances & Electronics Water Heating Maximum Rebate $35,000 (see exceptions below) Unsecured loans: $15,000 Program Info Funding Source Fix-Up Fund State Minnesota Program Type State Loan Program Rebate Amount $2,000 - $50,000 Provider Minnesota Housing Finance Agency The Minnesota Housing Finance Agency's (MHFA) Fix-up Loan provides low-interest financing for energy conservation and other basic improvements

42

Engines - Fuel Injection and Spray Research - Gasoline Sprays  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gasoline Sprays Gasoline Sprays Animated image of fuel emerging from a gasoline injector Animated image of fuel emerging from a gasoline injector (simulated environment). Some newer automobiles in the U.S. use gasoline direct injection (GDI) engines. These advanced gasoline engines inject the fuel directly into the engine cylinder rather than into the intake port. These engines can achieve higher fuel efficiency, but they depend on a precise fuel/air mixture at the spark plug to initiate ignition. This leads to more stringent requirements on spray quality and reproducibility. GDI also enables new combustion strategies for gasoline engines such as lean burn engines that use less fuel and air. Lean burn engines may achieve efficiencies near those of diesels while producing low emissions. This

43

Fixed Offshore Wind Turbines  

Science Journals Connector (OSTI)

In this chapter, a perspective of offshore wind farms, applied concepts for fixed offshore wind turbines, and related statistics are given. One example of a large wind farm, which is successfully operating, is st...

Madjid Karimirad

2014-01-01T23:59:59.000Z

44

Combined Painting Robot and Spray Painting Machine  

Science Journals Connector (OSTI)

The new Ven Spray Vario is the first system of its kind to combine an anthropomorphic robot with a spray painting machine. The system, which has been ... , brings together the flexibility of an industrial painting

2013-03-01T23:59:59.000Z

45

HVOF Combustion spraying of inconel powder  

Science Journals Connector (OSTI)

A major trend in the thermal spray industry has been to increase the gas ... is the high-velocity oxygen fuel process (HVOF). High-velocity spray guns combine oxygen and a fuel gas to ... The Taguchi experiment e...

D. J. Varacalle; M. G. Ortiz; C. S. Miller…

1993-06-01T23:59:59.000Z

46

The effect of air currents on the toxicity of spray and dust formulations of toxaphene, aldrin, and dieldrin  

E-Print Network [OSTI]

were two pieces of woody one stationary, the other hinged to the first. These held the spray and dust guns when in use. Each chamber was 42 inches high and 18 inches in diameter. The dust gun was made of glass tubing which had been bent to a 90... at a pressure of 60 pounds per square inch. In each treatnent, , 1. 15 cubic contimctcrs of spray, equivalent to 7. 5 gallons per acre, was delivered from the spray gun. The sprays werc prepared by diluting miscible oil concentrates with water...

Owen, Bernard Lawton

2012-06-07T23:59:59.000Z

47

Local Uniqueness for the Fixed Energy Fixed Angle Inverse Problem ...  

E-Print Network [OSTI]

Abstract. We prove local uniqueness for the inverse problem in obstacle scattering at a fixed energy and fixed incident angle. We consider the inverse problem of ...

48

Electrokinetically pumped high pressure sprays  

DOE Patents [OSTI]

An electrokinetic pump capable of producing high pressure is combined with a nozzle having a submicron orifice to provide a high pressure spray device. Because of its small size, the device can be contained within medical devices such as an endoscope for delivering biological materials such as DNA, chemo therapeutic agents, or vaccines to tissues and cells.

Schoeniger, Joseph S. (Oakland, CA); Paul, Phillip H. (Livermore, CA); Schoeniger, Luke (Pittsford, NY)

2005-11-01T23:59:59.000Z

49

Reactivity of fly ashes in a spray dryer FGD process  

SciTech Connect (OSTI)

During the period 1981-1982, a study was performed to determine the ability of various fly ashes to retain sulfur dioxide in a pilot plant spray dryer/fabric filter flue gas desulfurization system. This knowledge would provide design engineers with the necessary data to determine whether the fly ash from a particular utility could be used as an effective supplement or substitute for slaked lime in a spray dryer system. The study commenced with the collection of 22 fly ashes from lignite, subbituminous, and bituminous eastern and western coals. The ashes were contacted with the flue gas entering the pilot plant by two different techniques. In the first, the ashes were slurried in water and injected into the spray dryer through a spinning disk atomizer. In the second, the ashes were injected as a dry additive into the flue gas upstream of the spray dryer. Analyses were conducted to determine the ability of each ash to retain sulfur dioxide in the system followed by statistical correlations of the sulfur retention with the physical/chemical properties of each ash. 17 references, 32 figures, 19 tables.

Davis, W.T.; Reed, G.D.

1983-05-01T23:59:59.000Z

50

Spray-Formed Tooling with Micro-Scale Features  

SciTech Connect (OSTI)

Molds, dies, and related tooling are used to shape many of the plastic and metal components we use every day at home and work. Traditional mold-making practices are labor and capital equipment intensive, involving multiple machining, benching and heat treatment operations. Spray forming is an alternative method to manufacture molds and dies. The general concept is to atomize and deposit droplets of a tooling alloy onto a pattern to form a thick deposit while imaging the pattern’s shape, surface texture and details. Unlike conventional machining, this approach can be used to fabricate tooling with micro-scale surface features. This paper describes a research effort to spray form molds and dies that are used to image micro-scale surface textures into polymers. The goal of the study is to replicate textures that give rise to superhydrophobic behavior by mimicking the surface structure of highly water repellent biological materials such as the lotus leaf. Spray conditions leading to high transfer fidelity of features into the surface of molded polymers will be described. Improvements in water repellency of these materials was quantified by measuring the static contact angle of water droplets on flat and textured surfaces.

Kevin McHugh

2010-06-01T23:59:59.000Z

51

The Fix Issue 9  

E-Print Network [OSTI]

or reproductions may be made without written permission of the editor. ~ ;fRectar anb %{moro.$ia ... Welcome to OU T ho liday issue of THE FIX. Yes, it's a little latc, but you 'll also notice that it's a lit tle larger than usual. Part of thc reason fOT Ihc... themes to be important in the holiday context for our characters. There's ou r Hutch, a little glum and concerned about the state of the world, with Starsky at his side full of holiday chccr and hOpe. There's a little bi t of the both of them in all o f...

Multiple Contributors

1990-01-01T23:59:59.000Z

52

Microsoft PowerPoint - Spray mast SRNL-L9100-2009-0000188TechBrief.ppt  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Directed Spray Mast Directed Spray Mast at a glance  U.S. patent 6,889,920 B2  cleans with high precision  operates at extremely high pressures  fits through small tank- entry ports  requires less water  reduces electricity consumption The directed spray mast was originally conceived to eliminate the inherent dangers involved with sending workers into storage or process tanks during cleaning operations. The directed spray mast was designed to provide more precise cleaning of problem build-up areas within a tank versus the more global cleaning approach of existing technologies. Remotely operated tank- cleaning device Engineers at the Savannah River National Laboratory (SRNL) have developed a remotely-operated tank cleaning device for precise, high-pressure spray for

53

E-Print Network 3.0 - atmospheric plasma spray Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

spray Search Powered by Explorit Topic List Advanced Search Sample search results for: atmospheric plasma spray...

54

E-Print Network 3.0 - atmospheric plasma spraying Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

spraying Search Powered by Explorit Topic List Advanced Search Sample search results for: atmospheric plasma spraying...

55

E-Print Network 3.0 - atmospheric plasma sprayed Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sprayed Search Powered by Explorit Topic List Advanced Search Sample search results for: atmospheric plasma sprayed...

56

Fuel Injection and Spray Research Using X-Ray Diagnostics  

Broader source: Energy.gov (indexed) [DOE]

- The overall spray-to-spray variation has not been validated against quantitative data Two Approaches to study shot-shot variation: 1. Radiography 2. Phase Contrast...

57

Advancement in Fuel Spray and Combustion Modeling for Compression...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Vehicle Technologies Office Merit Review 2014: Advancement in Fuel Spray and...

58

X-Ray Characterization of Diesel Sprays | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

for Visualizing Fuel Injection Process and Diesel Sprays Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry...

59

Measurement of visibility through spray  

E-Print Network [OSTI]

Masters degree. Our cats Kathy, Miss Kitty, and especially Panther deserve special mention for making me take more breaks and unwind. Mom and Dad, thanks to you, I finally made it. TABLE OF CONTENTS ABSTRACT ACKNOWLEDGEMENTS. TABLE OF CONTENTS... five increasing magnitudes of simulated spray and a control. Each subject was seated in the Cutlass at a pre-determined site on the runway. The windshield of the car and the glass in the frames were inspected before the trials to ensure they were...

Wright, Bruce Alan

2012-06-07T23:59:59.000Z

60

Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows  

E-Print Network [OSTI]

Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows-time perfect mixing with a finite energy constraint on the stirring flow. On the other hand, using techniques, University of Michigan, Ann Arbor, MI 48109 (Dated: 31 March 2012) We consider passive scalar mixing

Novikov, Alexei

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Aerosol Formation from High-Pressure Sprays for Supporting the Safety Analysis for the Hanford Waste Treatment and Immobilization Plant  

SciTech Connect (OSTI)

The Waste Treatment and Immobilization Plant (WTP) at Hanford is being designed and built to pretreat and vitrify waste currently stored in underground tanks at Hanford. One of the postulated events in the hazard analysis for the WTP is a breach in process piping that produces a pressurized spray with small droplets that can be transported into ventilation systems. Literature correlations are currently used for estimating the generation rate and size distribution of aerosol droplets in postulated spray releases. These correlations, however, are based on results obtained from small engineered nozzles using Newtonian liquids that do not contain slurry particles and thus do not accurately represent the fluids and breaches in the WTP. A test program was developed to measure the generation rate of droplets suspended in a test chamber and droplet size distribution from a range of prototypic sprays. A novel test method was developed to allow measurement of sprays from small to very large breaches and also includes the effect of aerosol generation from splatter when the spray impacts on walls. Results show that the aerosol generation rate increases with increasing the orifice area, though with a weaker dependence on orifice area than the currently-used correlation. A comparison of water sprays to slurry sprays with 8 to 20 wt% gibbsite or boehmite particles shows that the presence of slurry particles depresses the release fraction compared to water for droplets above 10 ?m and increases the release fraction below this droplet size.

Gauglitz, Phillip A.; Mahoney, Lenna A.; Schonewill, Philip P.; Bontha, Jagannadha R.; Blanchard, Jeremy; Kurath, Dean E.; Daniel, Richard C.; Song, Chen

2013-03-05T23:59:59.000Z

62

AN ALTERNATIVE SCHEME FOR STIFFENING SRF CAVITIES BY PLASMA SPRAYING  

E-Print Network [OSTI]

temperature plasma and the molten particles are sprayed out of the plasma gun. Depending on the spraying High Velocity Oxy-Fuel Spraying (HVOF), and when an explosive mixture of oxygen and acetylene is used to post accelerate with the detonation (1-15 detonations per second), it is called Detonation-Gun Spraying

Paris-Sud XI, Université de

63

Fabrication of ZnO nanorod using spray-pyrolysis and chemical bath deposition method  

SciTech Connect (OSTI)

ZnO thin films with nanorod structure were deposited using Ultrasonic Spray Pyrolysis method for seed growth, and Chemical Bath Deposition (CBD) for nanorod growth. High purity Zn-hydrate and Urea are used to control Ph were dissolved in ethanol and aqua bidest in Ultrasonic Spray Pyrolysis process. Glass substrate was placed above the heater plate of reaction chamber, and subsequently sprayed with the range duration of 5, 10 and 20 minutes at the temperatures of 3500 C. As for the Chemical Bath Deposition, the glass substrate with ZnO seed on the surface was immerse to Zn-hydrate, HMTA (Hexa Methylene Tetra Amine) and deionized water solution for duration of 3, 5 and 7 hour and temperatures of 600 C, washed in distilled water, dried, and annealed at 3500 C for an hour. The characterization of samples was carried out to reveal the surface morphology using Scanning Electron Microscopy (SEM). From the data, the combination of 5 minutes of Ultrasonic Spray Pyrolysis process and 3 hour of CBD has showed the best structure of nanorod. Meanwhile the longer Spraying process and CBD yield the bigger nanorod structure that have been made, and it makes the films more dense which make the nanorod collide each other and as a result produce unsymetric nanorod structure.

Ramadhani, Muhammad F., E-mail: brian@tf.itb.ac.id; Pasaribu, Maruli A. H., E-mail: brian@tf.itb.ac.id; Yuliarto, Brian, E-mail: brian@tf.itb.ac.id; Nugraha, E-mail: brian@tf.itb.ac.id [Advanced Functional Materials Laboratory, Engineering Physics Department Faculty of Industrial Technology, Institut Teknologi Bandung (Indonesia)

2014-02-24T23:59:59.000Z

64

Cooling of hot gases by use of a spray tower  

E-Print Network [OSTI]

no effort to collect perfoz. mance data while main- taining the spray at the adiabatic saturation temperature of the air. In the experiments discussed herein, this was done in order to both improve the potential accuracy of the data and to simplify... at the entrance and at th. . throat oi' the venturi were connected by rubber tubing to a sensitive Meziam Company Yodel GP-5 inclined manometer, The maximum r. ading of this gauge was three inches of water while the cali- brationn intervals were 0. 02...

Pendleton, Elmer Lee

2012-06-07T23:59:59.000Z

65

Heat Flux Analysis of a Reacting Thermite Spray Impingent on a Substrate  

SciTech Connect (OSTI)

Spray combustion from a thermite reaction is a new area of research relevant to localized energy generation applications, such as welding or cutting. In this study, we characterized the heat flux of combustion spray impinging on a target from a nozzle for three thermite mixtures. The reactions studied include aluminum (Al) with iron oxide (Fe2O3), Al with copper oxide (CuO), and Al with molybdenum oxide (MoO3). Several standoff distances (i.e., distance from the nozzle exit to the target) were analyzed. A fast response heat flux sensor was engineered for this purpose and is discussed in detail. Results correlated substrate damage to a threshold heat flux of 4550 W/cm2 for a fixed-nozzle configuration. Also, higher gas-generating thermites were shown to produce a widely dispersed spray and be less effective at imparting kinetic energy damage to a target. These results provide an understanding of the role of thermal and physical properties (i.e., such as heat of combustion, gas generation, and particle size) on thermite spray combustion performance measured by damaging a target substrate.

Eric S. Collins; Michelle L. Pantoya; Michael A. Daniels; Daniel J. Prentice; Eric D. Steffler; Steven P. D'Arche

2012-03-01T23:59:59.000Z

66

Resuspension of wall deposits in spray dryers  

Science Journals Connector (OSTI)

Wall deposition occurs in spray dryers when dried or partially dried particles contact and adhere to the walls during operation, thus reducing the yield of product collected. Wall deposits also present a product ...

M. J. Hanus; T. A. G. Langrish

2007-10-01T23:59:59.000Z

67

Selected Abstracts of Thermal Spray Literature  

Science Journals Connector (OSTI)

Degradation of free-standing air plasma sprayed CoNiCrAlY coatings by vanadium and phosphorus pentoxides....Use of alternative and/or low-cost fuels such as syngas, petcoke and coal/petcoke ble...

2009-06-01T23:59:59.000Z

68

Recent INEL spray-forming developments  

SciTech Connect (OSTI)

Spray forming is a near-net-shape fabrication technology in which a spray of finely atomized liquid droplets is deposited onto a suitably shaped substrate or mold to produce a coherent solid. The technology offers unique opportunities for simplifying materials processing, oftentimes while substantially improving product quality. Spray forming can be performed with a wide range of metals and nonmetals, and offersproperty improvements resulting from rapid solidification (eg. refined microstructures, extended solid solubilities and reduced segregation). Economic benefits result from process simplification and the elimination of unit operations. Researchers at the Idaho National Engineering Laboratory (INEL) are developing spray-forming technology for producing near-net-shape solids and coatings of a variety of metals, polymers, and composite materials using de Laval nozzles. Results from several spray-forming programs are presented to illustrate the range of capabilities of the approach as well as the technical and economic benefits. These programs involved the production of low-carbon steel strip and SiC particulate reinforced aluminum strip; recent advances in spray forming tooling using low-melting-point metals are also described.

McHugh, K.M.; Key, J.F.

1992-12-31T23:59:59.000Z

69

Building America Technology Solutions for New and Existing Homes: Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)  

Broader source: Energy.gov [DOE]

This case study describes Building Science Corporation’s research into spray polyurethane foams in residential roofs, performing hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs.

70

Fixed Capital Investment Tax Credit (Connecticut) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Fixed Capital Investment Tax Credit (Connecticut) Fixed Capital Investment Tax Credit (Connecticut) Fixed Capital Investment Tax Credit (Connecticut) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Connecticut Program Type Corporate Tax Incentive Provider Connecticut Department of Economic and Community Development The Fixed Capital Investment Tax Credit allows a tax credit of 5% of the amount paid for any new fixed capital investment. Companies with fewer than 800 full-time employees may take a tax credit for machinery and equipment purchased and installed in a facility. The credit is based on a percentage of the amount spent on machinery that exceeds the amount spend on machinery

71

Thermomechanical processing of plasma sprayed intermetallic sheets  

DOE Patents [OSTI]

A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.0.05% Zr .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Ni, .ltoreq.0.75% C, .ltoreq.0.1% B, .ltoreq.1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, and/or .ltoreq.3% Cu. The process includes forming a non-densified metal sheet by consolidating a powder having an intermetallic alloy composition such as by roll compaction, tape casting or plasma spraying, forming a cold rolled sheet by cold rolling the non-densified metal sheet so as to increase the density and reduce the thickness thereof and annealing the cold rolled sheet. The powder can be a water, polymer or gas atomized powder which is subjecting to sieving and/or blending with a binder prior to the consolidation step. After the consolidation step, the sheet can be partially sintered. The cold rolling and/or annealing steps can be repeated to achieve the desired sheet thickness and properties. The annealing can be carried out in a vacuum furnace with a vacuum or inert atmosphere. During final annealing, the cold rolled sheet recrystallizes to an average grain size of about 10 to 30 .mu.m. Final stress relief annealing can be carried out in the B2 phase temperature range.

Hajaligol, Mohammad R. (Midlothian, VA); Scorey, Clive (Cheshire, CT); Sikka, Vinod K. (Oak Ridge, TN); Deevi, Seetharama C. (Midlothian, VA); Fleischhauer, Grier (Midlothian, VA); Lilly, Jr., A. Clifton (Chesterfield, VA); German, Randall M. (State College, PA)

2001-01-01T23:59:59.000Z

72

Applications in the Nuclear Industry for Thermal Spray Amorphous Metal and Ceramic Coatings  

E-Print Network [OSTI]

SAW Amorphous metal and ceramic thermal spray coatings havefor Thermal Spray Amorphous Metal and Ceramic Coatings J.

Blink, J.; Farmer, J.; Choi, J.; Saw, C.

2009-01-01T23:59:59.000Z

73

Computational Modeling of Relevant Automotive Rotary Spray Painting Process  

Science Journals Connector (OSTI)

During the automotive spray painting process, metallic car shells are conveyed at ... specified constant rectilinear speed through the booth. Robot-assisted rotary atomizers spray the car shell ... path particula...

Abraham J. Salazar

2013-01-01T23:59:59.000Z

74

Density of Spray-Formed Materials  

SciTech Connect (OSTI)

Spray Forming is an advanced materials processing technology that transforms molten metal into a near-net-shape solid by depositing atomized droplets onto a substrate. Depending on the application, the spray-formed material may be used in the as-deposited condition or it may undergo post-deposition processing. Regardless, the density of the as-deposited material is an important issue. Porosity is detrimental because it can significantly reduce strength, toughness, hardness and other properties. While it is not feasible to achieve fully-dense material in the as-deposited state, density greater than 99% of theoretical density is possible if the atomization and impact conditions are optimized. Thermal conditions at the deposit surface and droplet impact angle are key processing parameters that influence the density of the material. This paper examines the factors that contribute to porosity formation during spray forming and illustrates that very high as-deposited density is achieved by optimizing processing parameters.

Kevin M. McHugh; Volker Uhlenwinkel; Nils Ellendr

2008-06-01T23:59:59.000Z

75

Two-Phase Spray Cooling of Hybrid Vehicle Electronics: Preprint  

SciTech Connect (OSTI)

Spray cooling is a feasible cooling technology for hybrid vehicle electronics; HFE 7100 is a promising coolant.

Mudawar, I.; Bharathan, D.; Kelly, K.; Narumanchi, S.

2008-07-01T23:59:59.000Z

76

Numerical Simulation and Experimental Characterization of a Binary Aluminum Alloy Spray - Application to the Spray Rolling Process  

SciTech Connect (OSTI)

A stochastic, droplet-resolved model has been developed to describe the behavior of a binary aluminum alloy spray during the spray-rolling process. In this process, a molten aluminum alloy is atomized and the resulting spray is depostied on the rolls of a twin-roll caster to produce aluminum strip. The one-way coupled spray model allows the prediction of spray characteristics such as enthalph and solid fraction, and their distribution between the nozzle and the depostion surface. This paper outlines the model development and compares the predicted spray dynamics to PDI measurements performed in a controlled configuration. Predicted and measured droplet velocity and size distributions are presented for two points along the spray centerline along with predicted spray averaged specific enthalph and solid fraction curves.

S. B. Johnson; J.-P. Delplanque; Y. Lin; Y. Zhou; E. J. Lavernia; K. M. McHugh

2005-02-01T23:59:59.000Z

77

Countdown to Fixed Target INSIDE  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

17, 1996 17, 1996 Number 10 Countdown to Fixed Target INSIDE 2 University Close-Up: The University of Illinois 4 Tollestrup Elected to National Academy 5 Bardeen Receives Sakurai Prize 6 Take Your Daughters and Sons to Work Day "At this moment," Fermilab Director John Peoples told the House Subcommittee on Energy and Environment in testimony deliv- ered in Washington on May 8, "Fermilab is in the midst of the transition from collider opera- tions to fixed-target operations. In June, we will begin extracting a beam of protons from the Tevatron, the highest-energy external beam in the world. By directing this beam onto eight targets we will create eight distinct particle beams that will in turn support 10 unique experiments. Although fixed-target experi- ments cannot explore the high-energy frontier

78

Aerosol Formation from High-Pressure Sprays for Supporting the Safety Analysis for the Hanford Waste Treatment and Immobilization Plant - 13183  

SciTech Connect (OSTI)

The Waste Treatment and Immobilization Plant (WTP) at Hanford is being designed and built to pretreat and vitrify waste currently stored in underground tanks at Hanford. One of the postulated events in the hazard analysis for the WTP is a breach in process piping that produces a pressurized spray with small droplets that can be transported into ventilation systems. Literature correlations are currently used for estimating the generation rate and size distribution of aerosol droplets in postulated releases. These correlations, however, are based on results obtained from small engineered nozzles using Newtonian liquids that do not contain slurry particles and thus do not represent the fluids and breaches in the WTP. A test program was developed to measure the generation rate, and the release fraction which is the ratio of generation rate to spray flow rate, of droplets suspended in a test chamber and droplet size distribution from prototypic sprays. A novel test method was developed to allow measurement of sprays from small to large breaches and also includes the effect of aerosol generation from splatter when the spray impacts on walls. Results show that the release fraction decreases with increasing orifice area, though with a weaker dependence on orifice area than the currently-used correlation. A comparison of water sprays to slurry sprays with 8 to 20 wt% gibbsite or boehmite particles shows that the presence of slurry particles depresses the release fraction compared to water for droplets above 10 ?m and increases the release fraction below this droplet size. (authors)

Gauglitz, P.A.; Mahoney, L.A.; Schonewill, P.P.; Bontha, J.R.; Blanchard, J.; Kurath, D.E.; Daniel, R.C.; Song, C. [Pacific Northwest National Laboratory, PO Box 999, Richland WA 99352 (United States)] [Pacific Northwest National Laboratory, PO Box 999, Richland WA 99352 (United States)

2013-07-01T23:59:59.000Z

79

Mathematical modeling of spray drying  

E-Print Network [OSTI]

the fundamental mass and heat transport equations for the evaporation of droplets of v;ater and aqueous solutions. The model derived for pure water seems to fit the experimental data very well, the square of the radius of the drop decreases linearly with time... A. Shafi, Kishore Joshi, Ravinder Venugopal and Srikar. TABLE OF CONTENTS C~R I. INTRODUCTION . II. LITERATURE REVIEW . III. METHODOLOGY IV. RESULTS 4. 1. Evaporation of Pure Liquid Drops Page 12 17 17 4. 2. Evaporation of Water from...

Jayanthi, Gopal Vithal

2012-06-07T23:59:59.000Z

80

Development and trends in HVOF spraying technology  

Science Journals Connector (OSTI)

Three actual trends in development of HVOF spraying technology are described and discussed. The trends concern application fields as well as gun and feedstock characteristics. At the example of demountable draw bars it is shown that HVOF sprayed cermet coatings are capable to protect light weight material components subject to dynamical load against wear without detraction of fatigue strength. Personnel and production time savings can be exploited. High deposition efficiency at considerable powder feed rate, high density and negligible oxygen content in corrosion protective iron or nickel based coatings is achieved for spraying with newly developed HVOF guns operating at increased combustion chamber pressures. Also spraying of highly reactive materials like titanium under atmospheric conditions becomes feasible. A major obstacle for industrial use of respective coatings is the lack of adapted characterisation methods that permit to ascertain corrosion protective function. Ultrafine powder feedstock is used in order to reduce overall costs of wear protective cermet coatings due to the possibility to finish coatings by comparatively cheap belt grinding. However, it is shown that the replacement of coatings produced with conventional powder size fractions requires careful consideration of the particular tribological system. While cermet coatings produced with ultrafine powders outperform conventional coatings for sliding wear conditions, their capability to withstand dry abrasive wear stress is poor. The benefits concerning coating production costs may be outweighed by significantly decreased component life time.

Bernhard Wielage; Andreas Wank; Hanna Pokhmurska; Thomas Grund; Christian Rupprecht; Guido Reisel; Eduard Friesen

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Fixed Parameter Algorithms Daniel Marx  

E-Print Network [OSTI]

, for example k-CLIQUE and k-INDEPENDENT SET, no FPT algorithm is known. Can we show that these problems if and only if it has a vertex cover of size n - k. Transforming an INDEPENDENT SET instance (G, k, but INDEPENDENT SET is not known to be FPT. Fixed Parameter Algorithms ­ p.5/41 #12;Parameterized reduction

Fondements et Applications, Université Paris 7

82

Fixed Parameter Algorithms Dniel Marx  

E-Print Network [OSTI]

complexity Problem: VERTEX COVER INDEPENDENT SET Input: Graph G, integer k Graph G, integer k Question-complete NP-complete Fixed Parameter Algorithms ­ p.3/40 #12;Parameterized complexity Problem: VERTEX COVER INDEPENDENT SET Input: Graph G, integer k Graph G, integer k Question: Is it possible to cover the edges

Narasayya, Vivek

83

Erosion resistance of cooled thermal sprayed coatings under simulated erosion conditions at waterwall in FBCs  

SciTech Connect (OSTI)

The erosion-corrosion (E-C) behavior of cooled 1018 steel and several thermal sprayed coatings by bed ash, retrieved from an operating circulating fluidized bed combustor (CFBC) boiler firing biomass, was determined in laboratory tests using a nozzle type elevated temperature erosion tester. Test conditions attempted but not exactly to simulate the erosion conditions found at the refractory/bare-tube interface at the combustor waterwall of FBC boilers. The specimens were water-cooled on the backside. Material wastage rates were determined from the thickness loss measurements of specimens. Test results were compared with erosion-corrosion test results for isothermal specimens. The morphology of specimens was examined by scanning electron microscopy (SEM). It was found that the cooled specimens demonstrated higher erosion-corrosion wastage than those of the isothermal specimens. At a shallow impact angle of 30{degree} the effect of cooling specimens on the erosion wastage for thermal sprayed coatings was less than that for 1018 steel, while at a steep impact angle of 90{degree} this effect for thermal sprayed coatings was greater than that for 1018 steel. The hypersonic velocity oxygen fuel (HVOF) Cr{sub 3}C{sub 2} ceramic coating exhibited the highest E-C resistance due to its favorable composition and fine structure. The poor E-C resistance of arc-sprayed FeCrSiB coating was attributed to larger splat size, higher porosity and the presence of radial and tangential microcracks within the coating.

Wang, B.Q. [Metalspray USA, Inc., Richmond, VA (United States). Metallurgical Lab.; Lee, S.W. [Morgan State Univ., Baltimore, MD (United States). School of Engineering

1997-12-31T23:59:59.000Z

84

Water Research Institute Annual Technical Report  

E-Print Network [OSTI]

uniform coatings. Because the prepared solution of Aquacoat and DBS has a viscosity similar to water successfully with spray flow rates as high as 15 milliliters per minute. This results in faster coating. High

85

Boiling during high-velocity impact of water droplets on a hot stainless steel surface  

Science Journals Connector (OSTI)

...rho, V and p 0 are water density, impact velocity and atmospheric pressure, respectively. Assuming water vapour is a perfect...droplet-on-demand generator. Exp. Fluids. 34...of hot surfaces with water sprays. J. Heat Treating...

2006-01-01T23:59:59.000Z

86

Advanced Diagnostics for High Pressure Spray Combustion.  

SciTech Connect (OSTI)

The development of accurate predictive engine simulations requires experimental data to both inform and validate the models, but very limited information is presently available about the chemical structure of high pressure spray flames under engine- relevant conditions. Probing such flames for chemical information using non- intrusive optical methods or intrusive sampling techniques, however, is challenging because of the physical and optical harshness of the environment. This work details two new diagnostics that have been developed and deployed to obtain quantitative species concentrations and soot volume fractions from a high-pressure combusting spray. A high-speed, high-pressure sampling system was developed to extract gaseous species (including soot precursor species) from within the flame for offline analysis by time-of-flight mass spectrometry. A high-speed multi-wavelength optical extinction diagnostic was also developed to quantify transient and quasi-steady soot processes. High-pressure sampling and offline characterization of gas-phase species formed following the pre-burn event was accomplished as well as characterization of gas-phase species present in the lift-off region of a high-pressure n-dodecane spray flame. For the initial samples discussed in this work several species were identified, including polycyclic aromatic hydrocarbons (PAH); however, quantitative mole fractions were not determined. Nevertheless, the diagnostic developed here does have this capability. Quantitative, time-resolved measurements of soot extinction were also accomplished and the novel use of multiple incident wavelengths proved valuable toward characterizing changes in soot optical properties within different regions of the spray flame.

Skeen, Scott A.; Manin, Julien Luc; Pickett, Lyle M.

2014-06-01T23:59:59.000Z

87

Thermal spray coatings on Yankee dryers  

SciTech Connect (OSTI)

Several failure investigations and recent research on thermal spray coatings on Yankee dryer surfaces show at least three modes of environmentally induced degradation. Corrosion may occur with the ingress of certain chemicals into coating pores. Erosion or corrosion is manifested by streaks at local sites of high doctor blade loading. Erosion and cracking occur due to coating parameters, thermal stress, and differential expansion. While most of the results described in this paper are from investigations of molybdenum, stainless steel coatings also are discussed.

Bowers, D.F. (Packer Engineering, Inc., Naperville, IL (United States))

1994-08-01T23:59:59.000Z

88

Water injected fuel cell system compressor  

DOE Patents [OSTI]

A fuel cell system including a dry compressor for pressurizing air supplied to the cathode side of the fuel cell. An injector sprays a controlled amount of water on to the compressor's rotor(s) to improve the energy efficiency of the compressor. The amount of water sprayed out the rotor(s) is controlled relative to the mass flow rate of air inputted to the compressor.

Siepierski, James S. (Williamsville, NY); Moore, Barbara S. (Victor, NY); Hoch, Martin Monroe (Webster, NY)

2001-01-01T23:59:59.000Z

89

BROUWER'S FIXED POINT THEOREM JASPER DEANTONIO  

E-Print Network [OSTI]

BROUWER'S FIXED POINT THEOREM JASPER DEANTONIO Abstract. In this paper we prove Brouwer's Fixed be used to make three sequences which all have p as their limit point. Date: July 27, 2009. 1 #12;2 JASPER

May, J. Peter

90

Fluorescence methods for determination of temperature in fuel sprays  

Science Journals Connector (OSTI)

Fluorescent additives which allow the determination of droplet temperatures in hydrocarbon fuel sprays have been developed. These systems, which exploit the chemistry of organic...

Murray, A M; Melton, L A

1985-01-01T23:59:59.000Z

91

Advancement in Fuel Spray and Combustion Modeling for Compression...  

Broader source: Energy.gov (indexed) [DOE]

chemical kinetics into fluid dynamics simulations" "Development of High-Performance Computing (HPC) tools to provide unique insights into the spray and combustion...

92

Ames Laboratory Plasma Spray (ALPS) Facility | The Ames Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

molten materials that are very reactive and have high melting temperatures. HVOF and Plasma spray guns and an atmospheric chamber are available. Following the early...

93

Motion planning for robotic spray cleaning with environmentally safe solvents  

SciTech Connect (OSTI)

Automatic motion planning of a spray cleaning robot with collision avoidance is presented in this paper. In manufacturing environments, electronic and mechanical components are traditionally cleaned by spraying or dipping them using chlorofluorocarbon (CFC) solvents. As new scientific data show that such solvents are major causes for stratospheric ozone depletion, an alternate cleaning method is needed. Part cleaning with aqueous solvents is environmentally safe, but can require precision spraying at high pressures for extended time periods. Operator fatigue during manual spraying can decrease the quality of the cleaning process. By spraying with a robotic manipulator, the necessary spray accuracy and consistency to manufacture highreliability components can be obtained. Our motion planner was developed to automatically generate motions for spraying robots based on the part geometry and cleaning process parameters. For spraying paint and other coatings a geometric description of the parts and robot may be sufficient for motion planning, since coatings are usually done over the visible surfaces. For spray cleaning, the requirement to reach hidden surfaces necessitates the addition of a rule-based method to the geometric motion planning.

Hwang, Yong K.; Meirans, L.; Drotning, W.D.

1993-09-01T23:59:59.000Z

94

E85 Optimized Engine through Boosting, Spray Optimized DIG, VCR...  

Broader source: Energy.gov (indexed) [DOE]

More Documents & Publications E85 Optimized Engine through Boosting, Spray Optimized GDi, VCR and Variable Valvetrain E85 Optimized Engine Enhanced Ethanol Engine And Vehicle...

95

E85 Optimized Engine through Boosting, Spray Optimized GDi, VCR...  

Broader source: Energy.gov (indexed) [DOE]

GDi, VCR and Variable Valvetrain E85 Optimized Engine through Boosting, Spray Optimized GDi, VCR and Variable Valvetrain 2009 DOE Hydrogen Program and Vehicle Technologies Program...

96

Effect of Ambient Pressure on Diesel Spray Axial Velocity and...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

deer07kastengren.pdf More Documents & Publications Spray Structure Measured with X-Ray Radiography Ultrafast X-ray Phase-Enhanced Microimaging for Visualizing Fuel Injection...

97

Fixed Income Division Nomura International plc  

E-Print Network [OSTI]

Fixed Income Division © Nomura International plc Symmetry methods for quadratic Gaussian models International plc Outline Motivation The quadratic Gaussian distribution The quadratic Gaussian process The quadratic Gaussian model #12;Fixed Income Division 3© Nomura International plc Part 1 Motivation #12;Fixed

Macrina, Andrea

98

Effective parameters in axial injection suspension plasma spray process of alumina-zirconia ceramics  

E-Print Network [OSTI]

Effective parameters in axial injection suspension plasma spray process of alumina- zirconia phases using extra small particles as compared to conventional thermal spraying. Suspension spraying% yittria stabilized zirconia was deposited by axial injection SPS process. The effects of principal

Medraj, Mamoun

99

The effects of deposit thermal history on microstructure produced by uniform droplet spray forming  

E-Print Network [OSTI]

Uniform droplet spray forming is a process aimed at producing near-net-shape parts directly from the liquid melt by spraying micron-sized droplets onto a movable target. In spray forming, the solidification rate of the ...

Cherng, Jean-Pei Jeanie

2002-01-01T23:59:59.000Z

100

Small-Scale Spray Releases: Initial Aerosol Test Results  

SciTech Connect (OSTI)

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. The round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. This report presents the experimental results and analyses for the aerosol measurements obtained in the small-scale test stand. It includes a description of the simulants used and their properties, equipment and operations, data analysis methodologies, and test results. The results of tests investigating the role of slurry particles in plugging small breaches are reported in Mahoney et al. (2012). The results of the aerosol measurements in the large-scale test stand are reported in Schonewill et al. (2012) along with an analysis of the combined results from both test scales.

Mahoney, Lenna A.; Gauglitz, Phillip A.; Kimura, Marcia L.; Brown, Garrett N.; Kurath, Dean E.; Buchmiller, William C.; Smith, Dennese M.; Blanchard, Jeremy; Song, Chen; Daniel, Richard C.; Wells, Beric E.; Tran, Diana N.; Burns, Carolyn A.

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Small-Scale Spray Releases: Initial Aerosol Test Results  

SciTech Connect (OSTI)

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and net generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of antifoam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. For the combination of both test stands, the round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the much larger flow rates and equipment that would be required. This report presents the experimental results and analyses for the aerosol measurements obtained in the small-scale test stand. It includes a description of the simulants used and their properties, equipment and operations, data analysis methodologies, and test results. The results of tests investigating the role of slurry particles in plugging small breaches are reported in Mahoney et al. (2012). The results of the aerosol measurements in the large-scale test stand are reported in Schonewill et al. (2012) along with an analysis of the combined results from both test scales.

Mahoney, Lenna A.; Gauglitz, Phillip A.; Kimura, Marcia L.; Brown, Garrett N.; Kurath, Dean E.; Buchmiller, William C.; Smith, Dennese M.; Blanchard, Jeremy; Song, Chen; Daniel, Richard C.; Wells, Beric E.; Tran, Diana N.; Burns, Carolyn A.

2013-05-29T23:59:59.000Z

102

Large-Scale Spray Releases: Initial Aerosol Test Results  

SciTech Connect (OSTI)

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. The round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. The purpose of this report is to present the experimental results and analyses for the aerosol measurements obtained in the large-scale test stand. The report includes a description of the simulants used and their properties, equipment and operations, data analysis methodology, and test results. The results of tests investigating the role of slurry particles in plugging of small breaches are reported in Mahoney et al. 2012a. The results of the aerosol measurements in the small-scale test stand are reported in Mahoney et al. (2012b).

Schonewill, Philip P.; Gauglitz, Phillip A.; Bontha, Jagannadha R.; Daniel, Richard C.; Kurath, Dean E.; Adkins, Harold E.; Billing, Justin M.; Burns, Carolyn A.; Davis, James M.; Enderlin, Carl W.; Fischer, Christopher M.; Jenks, Jeromy WJ; Lukins, Craig D.; MacFarlan, Paul J.; Shutthanandan, Janani I.; Smith, Dennese M.

2012-12-01T23:59:59.000Z

103

Thermally sprayed coatings for boiler protection  

SciTech Connect (OSTI)

FBC boilers are large, expensive installations which suffer enormously from wear caused by corrosion, aggravated by high temperatures. The exact type of wear experienced varies from one part of a boiler to another and is influenced by the overall design of the boiler and the type of fuel burnt in it. Boiler manufacturers and users face a difficult choice in selecting materials to fight these problems. Inexpensive and easily worked metals, unfortunately, offer little resistance to the types of wear experienced in boilers, while alloys which are resistant to erosion and corrosion are very costly as well as being difficult to form and join. This paper presents a number of ways in which these material losses and related costs in boiler systems can be reduced by application of thermally sprayed coatings which lead to significant increases in service life. The selection of the coating material and of the correct deposition process can, today, be based on the results of laboratory tests (elevated temperature corrosion and erosion), small scale in-situ test coatings and on full scale FBC boiler protection coating utilization. Practical examples are given of thermal spray coatings which have been successfully applied to different kinds of FBC boilers including those burning coal, waste (chemical, industrial, household) and wood chips. The paper describes the procedures for applying coatings to boiler components, the properties of the resulting coatings and how best to select coating materials for use in some specific wear and corrosion environmentals. In addition, future trends in the utilization of thermally sprayed coatings are discussed.

Gustafsson, S.; Steine, H.T. [Eutectic and Castolin, Lausanne (Switzerland); Ridgway, W.F. [Eutectic and Castolin, New York, NY (United States)

1995-12-31T23:59:59.000Z

104

Fixed Rank Kriging A Fixed Rank Prediction Algorithm for Massive Spatial  

E-Print Network [OSTI]

Fixed Rank Kriging A Fixed Rank Prediction Algorithm for Massive Spatial Data with Application, 2010 1 / 24 #12;Fixed Rank Kriging Outline Spatial model, assumptions and some implementation challenges. Summary of Fixed Rank Kriging by Cressie and Johannesson (2008). Propose algorithm to estimate

Gilbes, Fernando

105

X-Ray Characterization of Diesel Sprays and the Effects of Nozzle...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Sprays and the Effects of Nozzle Geometry X-Ray Characterization of Diesel Sprays and the Effects of Nozzle Geometry 2004 Diesel Engine Emissions Reduction (DEER) Conference...

106

Diesel and Biodiesel Fuel Spray Simulations  

Science Journals Connector (OSTI)

Diesel and Biodiesel Fuel Spray Simulations ... That deviates from general assumptions and is probably the consequence of the large nozzle diameter. ... Numerous trials gave the best results for the pretuned C1, C2, and C3 values using following parameters and appropriate coefficients in the following expressions: where ?f is fuel density [kg/m3], ?f is fuel viscosity [mPa s], ?f is fuel surface tension [N/mm], tinj stands for injection time [ms], pave is average injection pressure [MPa], sq = pave/pmax (squarness), Qc represents fueling [mm3/cycle], and n is pump speed [1/min]. ...

Primoz Pogorevc; Breda Kegl; Leopold Skerget

2008-01-12T23:59:59.000Z

107

Discussion on the Water-Saving Technology of the Green Community  

E-Print Network [OSTI]

water utilization. Key words: green building; life cycle assessment (LCA); green community; non-traditional water resource; terms of reference (TOR) 1. INTRODUCTION Many countries in the world have been taking up with the green building... distribution asymmetry, drip and spray used in agriculture irrigation are introduced into urban. Drip irrigation is good at water-saving because water contacts directly with soil without sprayed in the air, especially using non-traditional water resource...

He, Q.; Gou, H.; Dai, Z.; Hao, Y.

2006-01-01T23:59:59.000Z

108

Home Fruit Spray Schedule Education Center & Info LIne  

E-Print Network [OSTI]

is followed, trees and small fruit plants should be reasonably free from insect and disease injury. This spray certain aphids, mites, scales, and pear psyllas on fruit trees. Copper soap (copper octanoate and situations where supplementary sprays or sanitation may be helpful. Diseases Black Knot of Plum and Cherry

New Hampshire, University of

109

Biological fixed-film systems  

SciTech Connect (OSTI)

This paper includes reports on several biological fixed film systems in wastewater and hazardous waste treatment. Biological treatment of a refinery wastewater was studied in a rotating biological contactor (RBC) unit coupled with polyurethane foam (PUF) as a porous biomass support attached on both sides of the biodisks. The RBC-PUF bioreactor exhibited better performance than conventional RBCs for the removal of chemical oxygen demand (COD), NH{sub 3}-N, phenol, hydrocarbons, and suspended solids because of higher concentrations of active biomass. Successful performance of an anaerobic-aerobic treatment process using a combination of RCBs with activated sludge was achieved for treating a dye wastewater. Two high-rate trickling filters, cross-flow (CF) and vertical flow, were examined over a two year period for biological treatment of seafood processing wastewater. Results suggested superior performance of CF plastic media with substrate removal following a pseudo half-order kinetic reaction. Submerged structured packings in biofilm reactors were tested and characterized for a wide range of applications. Their efficiency was discussed in terms of contaminant removals and SS retention.

Chen, J.M.; Lim, B.S.; Al-Ghusain, I.A.; Hao, O.J.; Lin, C.F.; Davis, A.P.; Kim, M.H.; Huang, J.

1993-06-01T23:59:59.000Z

110

Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)  

SciTech Connect (OSTI)

Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and closed cell SPF insulation sprayed to the underside of roof sheathing have been used since the mid-1990s to provide durable and efficient building enclosures. However, there have been isolated incidents of failures (either sheathing rot or SPF delamination) that raise some general concerns about the hygrothermal performance and durability of these systems. The primary risks for roof systems are rainwater leaks, condensation from diffusion and air leakage, and built-in construction moisture. This project directly investigated rain and indirectly investigated built-in construction moisture and vapor drives. Research involved both hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs. Other variables considered were climate zone, orientation, interior relative humidity, and the vapor permeance of the coating applied to the interior face of open cell SPF.

Not Available

2013-11-01T23:59:59.000Z

111

Reading with fixed and variable character pitch  

Science Journals Connector (OSTI)

We compared the effects of fixed and variable (proportional) spacing on reading speeds and found variable pitch to yield better performance at medium and large character sizes and...

Arditi, Aries; Knoblauch, Kenneth; Grunwald, Ilana

1990-01-01T23:59:59.000Z

112

Manual HVOF thermal spray repair of nickel aluminum bronze castings  

SciTech Connect (OSTI)

Manual high velocity oxyfuel (HVOF) thermal spray repairs were accomplished on a large nickel aluminum bronze propeller castings. The repairs were done on three different configurations of surface defects of up to 100 square inches and as deep as 90 mils. Nickel aluminum bronze alloy powder, sieve sized for the HVOF process, was sprayed. High quality, high coating density, repairs were achieved even on porous areas of the castings. Prior to performance of the repairs, a procedure was qualified in accordance with MIL-STD-1687 and a mock-up simulating the repair was produced. After HVOF spraying of the mock-up, the sprayed surface was sanded, milled, and drilled to determine how finishing of the actual castings would be done. After successful procedure qualification, the HVOF equipment was moved to the job site, metal masking was devised for the spray areas and grit blasting and manual HVOF spraying was done. Results of HVOF coating chemical analyses, bend tests, coating tensile bond strength tests, coating microscopic examinations, and mock-up evaluations are reported along with the spray procedures and techniques used in the repairs.

Brenna, R.T.; McCaw, R.L.; Pugh, J.L.

1994-12-31T23:59:59.000Z

113

Progress on Searching Optimal Thermal Spray Parameters for Magnesium Silicide Gaosheng Fu1  

E-Print Network [OSTI]

coatings prepared by Atmospheric Plasma Spray (APS), and Vacuum Plasma Spray (VPS) are presented. Seebeck, including Atmospheric Plasma Spray (APS) and Vacuum Plasma Spray (VPS) were applied to fabricate Mg2Si] and Tani[8] used spark plasma sintering and got maximum ZT of 0.86 at 862K with Bi doped Mg2Si

Zuo, Lei

114

Fourier Accelerated Conjugate Gradient Lattice Gauge Fixing  

E-Print Network [OSTI]

We provide details of the first implementation of a non-linear conjugate gradient method for Landau and Coulomb gauge fixing with Fourier acceleration. We find clear improvement over the Fourier accelerated steepest descent method, with the average time taken for the algorithm to converge to a fixed, high accuracy, being reduced by a factor of 2 to 4.

R. J. Hudspith

2014-05-22T23:59:59.000Z

115

Rain on the Roof-Evaporative Spray Roof Cooling  

E-Print Network [OSTI]

This paper describes evaporative spray roof cooling systems, their components, performance and applications in various climates and building types. The evolution of this indirect evaporative cooling technique is discussed. Psychrometric and sol...

Bachman, L. R.

1985-01-01T23:59:59.000Z

116

Integrated Design and Manufacturing of Thermoelectric Generator Using Thermal Spray  

Broader source: Energy.gov [DOE]

Presents progress in cost-effective thermoelectric generator fabrication by thermal spraying of thermoelectric materials and other functional layers directly onto automotive exhaust pipes with enhanced performance, durability, and heat transfer

117

Interaction of particles with carrier gas in HVOF spraying systems  

Science Journals Connector (OSTI)

Several designs of high-velocity oxygen fuel (HVOF) thermal spray systems have been created during the last ... coatings comparable in quality to detonation (D-gun) coatings. This paper presents numerical analysi...

E. Kadyrov; Y. Evdokimenko; V. Kisel; V. Kadyrov…

1994-12-01T23:59:59.000Z

118

Low-temperature spray ponds: performance evaluation and prediction  

E-Print Network [OSTI]

LOW-TEMPERATURE SPRAY PONDS: PERFORMANCE EVALUATION AND PREDICTION A Thesis by PHILIP DWAN KERIG Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May... 1980 Major Subject: Chemical Engineering LOW-TEMPERATURE SPRAY PONDS: PERFORMANCE EVALUATION AND PREDICTION A Thesis by PHILIP DWAN KERIG Approved as to style and content by: (Chairman of Committee) (Member) (Member) (Member) (Hea...

Kerig, Philip Dwan

2012-06-07T23:59:59.000Z

119

The Pressure of Water Waves upon a Fixed Obstacle  

Science Journals Connector (OSTI)

...approximations are made for sections of ship form. The examination was made...applications in the problem of a ship advancing through a train of waves...small proportion of the observed effect; the motions of the ship, and in particular its oscillations...

1940-01-01T23:59:59.000Z

120

Characterization of YSZ solid oxide fuel cells electrolyte deposited by atmospheric plasma spraying and low pressure plasma spraying  

Science Journals Connector (OSTI)

Yttria doped zirconia has been widely used as electrolyte materials for solid oxide fuel cells (SOFC). Plasma spraying is a cost-effective process to...2O3 stabilized ZrO2...(YSZ) layer was deposited by low press...

C. Zhang; H. L. Liao; W. Y. Li; G. Zhang; C. Coddet…

2006-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Proceedings of the 8th National Thermal Spray Conference Sept. 11-15 1995 Houston, Texas THE INFLUENCE OF NOZZLE DESIGN ON HVOF SPRAY PARTICLE VELOCITY AND  

E-Print Network [OSTI]

THE INFLUENCE OF NOZZLE DESIGN ON HVOF SPRAY PARTICLE VELOCITY AND TEMPERATURE C.M. Hackett and G.S. Settles of HVOF nozzle gas dynamics on spray particle velocity and temperature, which are expected to influence. In addition, HVOF spray particle acceleration and heating are numerically modeled, and these results

Settles, Gary S.

122

RaisingRivals'FixedCosts Matthew Olczak  

E-Print Network [OSTI]

. In addition much of the recent Industrial Organisation literature has focused on the importance of sunk costs, whereas this paper considers fixed costs that do not have to be sunk costs. A set of guidelines produced

Feigon, Brooke

123

Water preheater system  

SciTech Connect (OSTI)

A heat transfer liquid collects heat in a solar collector and transfers the heat to water in a preheater heat exchanger. Use of a negative-pressure collector by means of an ejector and pressure relief valve allows inexpensive and readily available materials to be used in the collector. Preferably, the preheat heat exchanger is a converted gas hot water heater in which the heat transfer liquid is sprayed onto a portion of the storage tank and is collected in a reservoir. The negative-pressure solar collector can also be used to heat swimming pool water.

Dunstan, Ph.E.

1985-03-12T23:59:59.000Z

124

MHK Technologies/LIMPET OWC fixed Near shore OWC | Open Energy Information  

Open Energy Info (EERE)

LIMPET OWC fixed Near shore OWC LIMPET OWC fixed Near shore OWC < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage LIMPET OWC fixed Near shore OWC.jpg Technology Profile Primary Organization Voith Hydro Wavegen Limited Project(s) where this technology is utilized *MHK Projects/Siadar Technology Resource Click here Wave Technology Type Click here Oscillating Water Column Technology Readiness Level Click here TRL 7/8: Open Water System Testing & Demonstration & Operation Technology Description Limpet (Land Installed Marine Powered Energy Transformer) is a shoreline energy converter sited on the island of Islay, off Scotland's west coast. The current Limpet device - Limpet 500 - was installed in 2000 and produces power for the national grid. Limpet uses the principle of an oscillating water column.

125

Sandia National Laboratories: spray combustion model  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Doppler Velocimeter EC Top Publications A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study Nonlinear Time-Domain...

126

Hot water decontamination of beef carcasses to increase microbiological safety and shelf-life  

E-Print Network [OSTI]

). The spraying system functioned by circulating hot water from the water bath to the spray gun at a given pressure and temperature. The pressure was constantly monitored by a pressure gauge (Marshall Town 88901, USA) installed in the valve junction.... The temperature m the water bath was monitored by a digital thermometer (Tegam 871, Digital Thermometer) with a type K thermocouple sensor. Also, the temperature of the spray coming out of the jet was measured with a thermocouple inserted and sealed in the tip...

Barakate, Michelle Lee

2012-06-07T23:59:59.000Z

127

Combustion engine with fuel injection system, and a spray valve for such an engine  

SciTech Connect (OSTI)

This paper describes a fuel system for a combustion engine have a cylinder with an air inlet passage. It comprises: a fuel spray valve having a fuel injection nozzle for spraying fuel into the cylinder air inlet passage and having a fuel spray valve passage leading to the nozzle, means for mounting the fuel spray valve to position the nozzle to open into the cylinder air inlet passage adjacent the cylinder, a fuel pump for providing fuel under pressure to the fuel spray valve passage to be sprayed from the fuel spray valve nozzle, and a fuel heating device connectable to an electrical power supply and disposed adjacent to the valve to be energized for heating the fuel to enhance finer spraying thereof by the fuel spray valve nozzle, the fuel heating device comprising means defining a spiral fuel flow path of selected length connected to and coaxial with the fuel spray valve passage to dispose the selected length of fuel flow path closely adjacent to the fuel spray valve passage, and a fuel heating element comprising a thermistor of a ceramic material of positive temperature coefficient of resistivity arranged to heat the selected length of the spiral fuel flow path to transfer heat to the fuel flowing in the spiral fuel flow path throughout the selected length of the spiral fuel flow path to substantially heat the fuel at a location closely adjacent to the fuel spray valve passage to enhance vaporizing of fuel being sprayed from the valve nozzle.

Wechem, G.V.; Beunk, G.; Van Den Elst, F.; Gerson, P.M.

1991-10-08T23:59:59.000Z

128

Characterization of the liquid sodium spray generated by a pipework hole  

SciTech Connect (OSTI)

Due to its advantageous thermodynamic characteristics at high temperature (550 deg. C), liquid sodium is the main candidate to be the cooling fluid for Generation TV nuclear reactors SFR (Sodium-cooled Fast Reactors). Now, sodium reacts very violently, both with the water and the oxygen of the air. Only few data were known about the liquid sodium behaviour when spread in the environment through micro defects. These are often present in a cooling circuit in welded or sealed joints and more rarely in the pipes. Micro defects, on the other hand, can be also generated in a cooling circuit because of the vibrations always present in a circuit into which a fluid runs. A new set-up, named LISOF, was built for testing high temperature liquid sodium when passing through micro defects and generating sprays or jets. Sprays and jets were generated by means of nozzles embedding sub milli-metric holes the diameter of which was: 0.2 mm, 0.4 mm, 0.5 mm. Tests were performed by pressurizing liquid sodium (550 deg. C) at: 3, 6 and 9 barg. Normal and high speed cinematography were used for the direct observation of the liquid sodium sprays while Phase Doppler Interferometry was used for the measurement of the droplets characteristics and velocity. Tests concerning the behaviour of the high temperature liquid sodium firing in air or in contact with the cement cover applied to a scaled down core catcher simulacrum were also performed. The paper presents the built set-up and the collected results. (authors)

Torsello, G.; Parozzi, F.; Nericcio, L. [RSE - Nuclear and Industrial Plant Safety Team, Power Generation System Dept., via Rubattino 54, 20134 Milano (Italy); Araneo, L.; Cozzi, F. [Politecnico di Milano, Energy Dept., via Lambruschini 4, 20156 Milano (Italy); Carcassi, M.; Mattei, N. [Universita di Pisa-Facolta d'Ingegneria DIMNP-Mechanical, Nuclear and Production Dep., Largo L. Lazzarino 2, 56126 Pisa (Italy)

2012-07-01T23:59:59.000Z

129

Spray-cooling concept for wind-based compressed air energy storage  

Science Journals Connector (OSTI)

Wind turbine output energy varies over time with local wind speed and is typically inconsistent with grid power demand. Without energy storage the resulting difference between rated (peak) power and average power output leads to over-sizing of electrical generator and transmission lines. This conventional arrangement can be avoided if wind turbines can be coupled with energy storage to eliminate the output variations and instead produce their average power on a continuous basis. This would allow a smaller lower-cost constant-speed generator and a reduced capacity transmission system sized only for average power output. To accomplish this goal this study discusses a concept for a storage system for a 5?MW off-shore wind turbine which integrates a spray-based compressed air energy storage with a 35?MPa accumulator. The compressor employs a liquid piston for air sealing and employs water spray to augment heat transfer for high-efficiency. The overall compression is proposed in three stages with pressure ratios of 10:1 7:1 and 5:1 all operated at 1?Hz to maintain moderate liquid surface acceleration. Based on a simple and fundamental description of the system compression efficiency was found to be strongly dependent on droplet surface area which can be achieved through either high mass loading or small drop sizes. The simulations also show that direct injection spray can increase overall three-stage compression efficiency to as high as 89% substantially better than the 27% associated with a conventional adiabatic compression at the same pressure ratio. In addition this study introduces a key performance parameter termed the Levelization Factor which can be used to quantify the impact of storage on wind energy systems. However experiments and simulations based on 3-D geometries with design details are needed to determine the potential of this concept.

2014-01-01T23:59:59.000Z

130

High-Velocity Oxygen Fuel Thermal Spray of Fe-Based Amorphous Alloy: a Numerical and Experimental Study  

E-Print Network [OSTI]

High-Velocity Oxygen Fuel Thermal Spray of Fe-Basedusing a high velocity oxygen fuel (HVOF) spray processstructure. [12] High velocity oxygen fuel (HVOF) thermal

Ajdelsztajn, L.; Dannenberg, J.; Lopez, J.; Yang, N.; Farmer, J.; Lavernia, E. J.

2009-01-01T23:59:59.000Z

131

Fixed target facility at the SSC  

SciTech Connect (OSTI)

The question of whether a facility for fixed target physics should be provided at the SSC must be answered before the final technical design of the SSC can be completed, particularly if the eventual form of extraction would influence the magnet design. To this end, an enthusiastic group of experimentalists, theoreticians and accelerator specialists have studied this point. The accelerator physics issues were addressed by a group led by E. Colton whose report is contained in these proceedings. The physics addressable by fixed target was considered by many of the Physics area working groups and in particular by the Structure Function Group. This report is the summary of the working group which considered various SSC fixed target experiments and determined which types of beams and detectors would be required. 13 references, 5 figures.

Loken, S.C.; Morfin, J.G.

1985-01-01T23:59:59.000Z

132

Advanced Research in Diesel Fuel Sprays Using X-rays from the...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Research in Diesel Fuel Sprays Using X-rays from the Advanced Photon Source Advanced Research in Diesel Fuel Sprays Using X-rays from the Advanced Photon Source 2003 DEER...

133

E-Print Network 3.0 - air fuel spray Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and distribution of fuel drops in the spray field, fuel-air mixing... and amount of pollution are of importance in the combustion process. The fuel spray characteristics play......

134

The role of wind waves and sea spray in airsea interaction  

E-Print Network [OSTI]

The role of wind waves and sea spray in air­sea interaction Proefschrift ter verkrijging van de and moisture . . . . . . . . . . . . . . . . . . . . 4 1.3.1 Sea spray and outer regions . . . . . . . . . . . . . . . . . . . . 15 2.3.2 The role of viscosity

Haak, Hein

135

Fuel Injection and Spray Research Using X-Ray Diagnostics | Department...  

Broader source: Energy.gov (indexed) [DOE]

Injection and Spray Research Using X-Ray Diagnostics Fuel Injection and Spray Research Using X-Ray Diagnostics 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

136

Spray Shadowing For Stress Relief And Mechanical Locking In Thick  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Advanced Materials » Advanced Materials » Spray Shadowing For Stress Relief And Mechanical Locking Spray Shadowing For Stress Relief And Mechanical Locking In Thick Protective Coatings A method for applying a protective coating on an article. Available for thumbnail of Feynman Center (505) 665-9090 Email Spray Shadowing For Stress Relief And Mechanical Locking In Thick Protective Coatings A method for applying a protective coating on an article, comprising the following steps: selecting an article with a surface for applying a coating thickness; creating undercut grooves on the article, where the grooves depend beneath the surface to a bottom portion with the grooves having an upper width on the surface and a lower width on the bottom portion connected by side walls, where at least one of the side walls connects the

137

Essential and Fixed Oils of Kansas Plants  

E-Print Network [OSTI]

’ Center for Digital Scholarship. http://kuscholarworks.ku.edu Submitted to the University of Kansas in partial fulfillment of the requirements for the Degree of Master of Arts EARL J. WELLINGTON E s s e n t i a l and F i x e d Oi l s of K a n s a... s Plants ESSENTIAL AND FIXED OILS OP KANSAS PLANTS. R0D1D7 HIODM The following report deals with those Kansas plants (one or two trees included) which are known to y i e l d or are suspected of yielding essential and fixed o i l s . Ho cultivated...

Wellington, Earl J.

1908-01-01T23:59:59.000Z

138

Materials Science and Engineering A297 (2001) 235243 Plasma-sprayed ceramic coatings: anisotropic elastic and  

E-Print Network [OSTI]

anisotropic elastic stiffnesses and thermal conductivities of the plasma sprayed ceramic coatingMaterials Science and Engineering A297 (2001) 235­243 Plasma-sprayed ceramic coatings: anisotropic are derived. © 2001 Elsevier Science S.A. All rights reserved. Keywords: Thermal spray; Elastic properties

Sevostianov, Igor

139

Mechanical properties of WC10Co cemented carbides sintered from nanocrystalline spray conversion processed powders  

E-Print Network [OSTI]

Mechanical properties of WC±10Co cemented carbides sintered from nanocrystalline spray conversion as the spray conversion process [2]. The WC particle sizes in powders fabricated by the spray conversion: microstructural parameters such as WC grain size, Co mean free path and WC/WC contiguity; chemical factors

Hong, Soon Hyung

140

NOZZLE FUZZY CONTROLLER OF AGRICULTURAL SPRAYING ROBOT AIMING  

E-Print Network [OSTI]

spraying system with machine-vision guidance and adjust able yaw nozzles was studied by Giles D the shortcomings of existing nozzle control system, such as the long regulation time, the higher overshoot and so was designed as a 2- inputs&1-output closed-loop system. The inputs are the distance from nozzle to crop row

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Effective Parameters in Axial Injection Suspension Plasma Spray Process  

E-Print Network [OSTI]

Effective Parameters in Axial Injection Suspension Plasma Spray Process of Alumina-structured coatings with metastable phases using significantly smaller particles as compared to conventional thermal, an alumina/ 8 wt.% yttria-stabilized zirconia was deposited by axial injection SPS process. The effects

Medraj, Mamoun

142

Lattice Boltzmann spray-like fluids G. Falcucci1  

E-Print Network [OSTI]

epl draft Lattice Boltzmann spray-like fluids G. Falcucci1 , S. Chibbaro2,3 S. Succi2 , X. Shan4. - The effects of the competition between short-range attraction and mid-range repulsion in lattice Boltzmann-potential- Lattice-Boltzmann (LB) method, developed over a decade ago by Shan and Chen (SC) [13]. This method has

Chibbaro, Sergio

143

Crystalline structure and physical properties of ship superstructure spray ice  

Science Journals Connector (OSTI)

...ice accretion on a ship, and the properties...result of the integrated effects of spray frequency...seaworthiness by its effects on ship centre of gravity and...various locations on the ship. It also has a large effect upon the ultimate strength...

2000-01-01T23:59:59.000Z

144

QUANTIFICATION OF HEAT FLUX FROM A REACTING THERMITE SPRAY  

SciTech Connect (OSTI)

Characterizing the combustion behaviors of energetic materials requires diagnostic tools that are often not readily or commercially available. For example, a jet of thermite spray provides a high temperature and pressure reaction that can also be highly corrosive and promote undesirable conditions for the survivability of any sensor. Developing a diagnostic to quantify heat flux from a thermite spray is the objective of this study. Quick response sensors such as thin film heat flux sensors can not survive the harsh conditions of the spray, but more rugged sensors lack the response time for the resolution desired. A sensor that will allow for adequate response time while surviving the entire test duration was constructed. The sensor outputs interior temperatures of the probes at known locations and utilizes an inverse heat conduction code to calculate heat flux values. The details of this device are discussed and illustrated. Temperature and heat flux measurements of various thermite spray conditions are reported. Results indicate that this newly developed energetic material heat flux sensor provides quantitative data with good repeatability.

Eric Nixon; Michelle Pantoya

2009-07-01T23:59:59.000Z

145

Covered Product Category: Pre-Rinse Spray Valves  

Broader source: Energy.gov [DOE]

The Federal Energy Management Program (FEMP) provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including pre-rinse spray valves, which are a FEMP-designated product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

146

Effects of valley meteorology on forest pesticide spraying  

SciTech Connect (OSTI)

Pacific Northwest Laboratory conducted this study for the Missoula Technology and Development Center of the US Department of Agriculture's Forest Service. The purpose of the study was to summarize recent research on valley meteorology during the morning transition period and to qualitatively evaluate the effects of the evolution of valley temperature inversions and wind systems on the aerial spraying of pesticides in National Forest areas of the western United States. Aerial spraying of pesticides and herbicides in forests of the western United States is usually accomplished in the morning hour after first light, during the period known to meteorologists as the morning transition period.'' This document describes the key physical processes that occur during the morning transition period on undisturbed days and the qualitative effects of these processes on the conduct of aerial spraying operations. Since the timing of valley meteorological events may be strongly influenced by conditions that are external to the valley, such as strong upper-level winds or the influence of clouds on the receipt of solar energy in the valley, some remarks are made on the qualitative influence of these processes. Section 4 of this report suggests ways to quantify some of the physical processes to provide useful guidance for the planning and conduct of spraying operations. 12 refs., 9 figs.

Whiteman, C.D.

1990-04-01T23:59:59.000Z

147

Development of ultrafast computed tomography of highly transient fuel sprays  

E-Print Network [OSTI]

-generation automotive internal combustion engines.1 Among these is gasoline direct-injection (GDI) technology, which has. In a combustion system employing GDI, the fuel is directly injected into the combustion chamber instead of the air, the fuel efficiency can be greatly improved. Therefore, detailed analyses of the fuel sprays in the GDI

Gruner, Sol M.

148

Alternative Heat Recovery Options for Single-Stage Spray Dryers  

E-Print Network [OSTI]

describes an analysis performed at a milk products plant, where a spray dryer is used to produce powdered milk. Discussed approaches include air-to-air and air-liquid-air recuperates. Key issues include heat recovery potential, capital costs, overall payback...

Wagner, J. R.

1984-01-01T23:59:59.000Z

149

Fixed target electroweak and hard scattering physics  

SciTech Connect (OSTI)

The possibilities for future physics and experiments involving weak and electromagnetic interactions, neutrino oscillations, general hard scattering and experiments involving nuclear targets were explored. The studies were limited to the physics accessible using fixed target experimentation. While some of the avenues explored turn out to be relatively unrewarding in the light of competition elsewhere in the world, there are a number of positive conclusions reached about experimentation in the energy range available to the Main Injector and Tevatron. Some of the experiments would benefit from the increased intensity available from the Tevatron utilizing the Main Injector, while some require this increase. Finally, some of the experiments would use the Main Injector low energy, high intensity extracted beams directly. A program of electroweak and hard scattering experiments at fixed target energies retains the potential for important contributions to physics. The key to major parts of this program would appear to be the existence of the Main Injector. 115 refs, 17 figs.

Brock, R. (Michigan State Univ., East Lansing, MI (USA)); Brown, C.N.; Montgomery, H.E. (Fermi National Accelerator Lab., Batavia, IL (USA)); Corcoran, M.D. (eds.) (Rice Univ., Houston, TX (USA))

1990-02-01T23:59:59.000Z

150

Protection Programming Defensive Planning for Fixed Facilities  

Broader source: Energy.gov (indexed) [DOE]

NOT MEASUREMENT NOT MEASUREMENT SENSITIVE DOE STD-1207-2012 December 2012 DOE STANDARD Protection Program Defensive Planning For Fixed Facilities U.S. Department of Energy AREA SANS Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE STD-1207-2012 This Page Intentionally Left Blank ii DOE STD-1207-2012 TABLE OF CONTENTS FOREWORD..................................................................................................................................v PROTECTION PROGRAM DEFENSIVE PLANNING ..........................................................1 1. SCOPE............................................................................................................................ 1 2. PURPOSE. ..................................................................................................................... 1

151

Continuous production of redispersible and rapidly-dissolved fenofibrate nanoformulation by combination of microfluidics and spray drying  

Science Journals Connector (OSTI)

Abstract Slow dissolution rate is responsible for poor oral bioavailability of fenofibrate. This work aimed at synthesizing a redispersible and rapidly-dissolved fenofibrate nanoformulation by combination of antisolvent precipitation-in-microfluidics and spray drying. 196–296 nm fenofibrate nanoparticles (NPs) were achieved by the developed process. Increasing the volume ratio of the antisolvent water to drug ethanolic solution, flow rate or drug concentration resulted in the formation of smaller particles. Fenofibrate nanoformulation exhibited good redispersibility and much faster dissolution rate in comparison with the raw drug.

Yuancai Dong; Wai Kiong Ng; Jun Hu; Shoucang Shen; Reginald B.H. Tan

2014-01-01T23:59:59.000Z

152

Neutron Electric Dipole Moment at Fixed Topology  

E-Print Network [OSTI]

We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the $\\theta$-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed non-trivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.

Keh-Fei Liu

2008-07-09T23:59:59.000Z

153

Fixed point theorems in ultrametric spaces  

E-Print Network [OSTI]

Point Theorems in Ultrametric Spaces. (May 1972) Steven E. Fullbright, B. A. , Texas A&M University M. S. , Texas A&M University Directed by: L. F. Guseman, Jr. and Jack Bryant Let (X, d) be an ultrametric space and f a contractive selfmap of X.... It is shown that the existence of fixed points of f is related to simple properties of the metric d. iv ACKNOWLEDGEMENTS I wish to thank the following people for their assistance and support in writing this thesis: Larry Guseman, who provided guidance...

Fullbright, Steven Edward

2012-06-07T23:59:59.000Z

154

Fixed Target Beauty Physics Experimental Programs  

SciTech Connect (OSTI)

The current and near term future fixed target physics efforts in observing particles with open beauty are reviewed. This includes a compilation of the non-observation upper limits and the observation of both upsilon and b-states. A short discussion of the theoretical predictions for the hadro-produced beauty pairs is included. The major part of this review is devoted to the techniques and tricks employed, a survey of the current and proposed experiments. A personal summary of the experimental prospects concludes this report. 28 refs., 26 figs.

Garbincius, P.H.

1987-11-01T23:59:59.000Z

155

Process Simulation and Paint Thickness Measurement for Robotic Spray Painting  

Science Journals Connector (OSTI)

A method and a computer program are developed for modeling of spray painting process, simulation of robotic spray painting, off-line programming of industrial robots and paint thickness measurement for painting of curved surfaces. The computer program enables the user to determine the painting strategies, parameters and paths. Surface models of the parts that are to be painted are obtained by using a CAD software. For paint thickness measurements, probe of the coating thickness measurement gage is attached to the wrist of the robot by using a feedback/safety adapter designed and manufactured for this purpose. Thicknesses are measured and transferred to the computer automatically. Then, obtained thickness data is processed and comparisons between simulated and measured thicknesses are made.

M.A. Sahir ARIKAN; Tuna BALKAN

2001-01-01T23:59:59.000Z

156

Photon Tools for Fuel Spray Studies in Aerospace Propulsion Systems  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tools for Fuel Spray Studies in Aerospace Tools for Fuel Spray Studies in Aerospace Propulsion Systems Kuo-Cheng Lin, 1 Campbell D. Carter, 2 and Stephen A. Schumaker 3 1 Taitech, Inc., 1430 Oak Court, Suite 301, Beavercreek, OH 45430, USA; 2 Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA; 3 Air Force Research Laboratory, Edwards Air Force Base, CA 93524, USA Fuel injection plays an important role in establishing stable and efficient combustion inside the combustor of a liquid-fueled aerospace propulsion system. Depending on the application of interest, fuel injection conditions range from high-speed crossflows in the air-breathing propulsion systems to quiescent environments with extremely high pressures in the rocket engines. In addition to the typical liquid

157

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999  

E-Print Network [OSTI]

FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999 After completion of all deliverables required under a fixed-price award, after costs in fulfilling the requirements of the award have been

Weston, Ken

158

Note on R&D expenditures and fixed capital formation  

Science Journals Connector (OSTI)

In this paper we deal with the fixed capital nature of the means of production and ... . We argue that these R&D current expenditures typically have the nature of fixed investments. ... then present an empirical ...

Mario De Marchi; Maurizio Rocchi

2010-11-01T23:59:59.000Z

159

AAC R14-2 - Fixed Utilities | Open Energy Information  

Open Energy Info (EERE)

Fixed Utilities Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: AAC R14-2 - Fixed UtilitiesLegal Abstract This chapter...

160

CFD?Phenomenological Diesel Spray Analysis under Evaporative Conditions  

Science Journals Connector (OSTI)

CFD?Phenomenological Diesel Spray Analysis under Evaporative Conditions ... Despite their great uncertainties compared to the experimental studies, numerical simulations permit carrying out extensive parametric studies, isolating every single variable involved in the general process at any point in time and at any position in physical space. ... The thermodynamic codes assume that the cylinder charge is uniform in both composition and temperature, at all times during the cycle. ...

J. M. Desantes; X. Margot; J. M. Pastor; M. Chavez; A. Pinzello

2009-07-13T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Automated spray cleaning using flammable solvents in a glovebox environment  

SciTech Connect (OSTI)

The Clean Air Act Amendments that have phased out the use of ozone depleting solvents (ODS) have given the precision cleaning industry a challenge that they must respond to if they are to continuously and economically improve quality of service. The phase out of the ozone depleting solvents has forced industry to look to solvents such as alcohol, terpenes and other flammable solvents to perform the critical cleaning processes. These solvents are not as efficient as their ODS counterparts in terms of soil loading, cleaning time and drying when used in standard cleaning processes such as manual sprays or ultrasonic baths. They also require special equipment designs to meet part cleaning specifications and operator safety requirements. This paper describes a cleaning system that incorporates the automated spraying of flammable solvents to effectively perform precision cleaning processes. The prototype workcell under development uses a robot that sprays Isopropyl Alcohol (IPA) and terpene at pressures ranging to 600 psi in a glovebox environment. Key to the projects success was the development of software that controls the robotic system and automatically generates robotic cleaning paths from three dimensional CAD models of the items to be cleaned. Also key to the success of this prototype development is FM approval of the process and associated hardware which translates directly into operator and facilities safety.

McKee, R.; Meirans, L.; Watterberg, P.; Drotning, W. [Sandia National Labs., Albuquerque, NM (United States)

1997-04-01T23:59:59.000Z

162

Computational simulation of liquid-fuelled HVOF thermal spraying  

Science Journals Connector (OSTI)

Liquid-fuelled high-velocity oxygen–fuel (HVOF) thermal spraying systems are gaining more attentions due to their advantage of producing denser coatings in comparison to their gas-fuelled counterparts. The flow through a HVOF gun is characterized by a complex array of thermodynamic phenomena involving combustion, turbulence and compressible flow. Advanced computational models have been developed to gain insight to the thermochemical processes of thermal spraying, however little work has been reported for the liquid-fuelled systems. This investigation employs a commercial finite volume CFD code to simulate the flow field through the most widely used liquid-fuel HVOF gun, JP5000 (Praxair, US). By combining numerical combustion and discrete phase models the turbulent spray flame is captured and the development of supersonic gas flow is revealed. The flow field is thoroughly examined by adjusting the nozzle throat diameter and combustion chamber size. The influence of fuel droplet size on the flame shame shape and combusting gas flow is also examined.

H. Tabbara; S. Gu

2009-01-01T23:59:59.000Z

163

On the computational content of the brouwer fixed point theorem  

Science Journals Connector (OSTI)

We study the computational content of the Brouwer Fixed Point Theorem in the Weihrauch lattice. One of our main results is that for any fixed dimension the Brouwer Fixed Point Theorem of that dimension is computably equivalent to connected choice of ...

Vasco Brattka; Stéphane Le Roux; Arno Pauly

2012-06-01T23:59:59.000Z

164

Integration of streaming and elastic traffic: a fixed point approach  

Science Journals Connector (OSTI)

We present a fixed point approach to evaluate the quality of service of streaming traffic multiplexed with elastic traffic in multi-service networks. First, we handle elastic traffic and streaming traffic separately, and then we derive a general fixed ... Keywords: elastic traffic, fixed point, quality of service, streaming traffic

H. Hassan; O. Brun; J. M. Garcia; D. Gauchard

2008-03-01T23:59:59.000Z

165

New EM Technology: Spray Lights up Contamination Hot Spots | Department of  

Broader source: Energy.gov (indexed) [DOE]

EM Technology: Spray Lights up Contamination Hot Spots EM Technology: Spray Lights up Contamination Hot Spots New EM Technology: Spray Lights up Contamination Hot Spots July 24, 2013 - 12:00pm Addthis The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99. The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99. An image intensified camera system captured an image of the simulated debris material in dark conditions. An image intensified camera system captured an image of the simulated debris material in dark conditions. The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99.

166

New EM Technology: Spray Lights up Contamination Hot Spots | Department of  

Broader source: Energy.gov (indexed) [DOE]

New EM Technology: Spray Lights up Contamination Hot Spots New EM Technology: Spray Lights up Contamination Hot Spots New EM Technology: Spray Lights up Contamination Hot Spots July 24, 2013 - 12:00pm Addthis The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99. The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99. An image intensified camera system captured an image of the simulated debris material in dark conditions. An image intensified camera system captured an image of the simulated debris material in dark conditions. The ORNL researchers conducted a test in which they sprayed the scintillating phosphor on simulated debris material marked with technetium-99.

167

Particle Velocity and Deposition Efficiency in the Cold Spray Process  

SciTech Connect (OSTI)

Copper powder was sprayed by the cold-gas dynamic method. In-flight particle velocities were measured with a laser-two-focus system as a function of process parameters such as gas temperature, gas pressure, and powder feed rate. Particle velocities were uniform in a relatively large volume within the plume and agreed with theoretical predictions. The presence of the substrate was found to have no significant effect on particle velocities. Cold-spray deposition efficiencies were measured on aluminum substrates as a function of particle velocity and incident angle of the plume. Deposition efficiencies of up to 95% were achieved. The critical velocity for deposition was determined to be about 640 meters per second. This work investigates both the in-flight characteristics of copper particles in a supersonic cold-spray plume and the build-up of the subsequent coating on aluminum substrates. Velocities were found to be relatively constant within a large volume of the plume. Particle counts dropped off sharply away from the central axis. The presence of a substrate was found to have no effect on the velocity of the particles. A substantial mass-loading effect on the particle velocity was observed; particle velocities begin to drop as the mass ratio of powder to gas flow rates exceeds 3%. The measured variation of velocity with gas pressure and pre-heat temperature was in fairly good agreement with theoretical predictions. Helium may be used as the driving gas instead of air in order to achieve higher particle velocities for a given temperature and pressure. Coating deposition efficiencies were found to increase with particle velocity and decrease with gun- substrate angle. There did not appear to be any dependence of the deposition efficiency on coating thickness. A critical velocity for deposition of about 640 mk appears to fit the data well. The cold-spray technique shows promise as a method for the deposition of materials which are thermally sensitive or may experience rapid oxidation under typical thermal spray conditions. High deposition efficiencies are achievable for certain coating-substrate conditions. Work remains to determine the material and microstructural properties which govern the coating process.

Dykhuizen, R.C.; Gilmore, D.L.; Neiser, R.A.; Roemer, T.J.; Smith, M.F.

1998-11-12T23:59:59.000Z

168

Spray atomization characteristics of a GDI injector equipped with a group-hole nozzle  

Science Journals Connector (OSTI)

Abstract The main purpose of this paper is to analyze the spray characteristics of a group-hole nozzle in terms of spray behavior and atomization process in comparison to the characteristics of a single-hole nozzle as reference. Spray visualization and PDPA (phase Doppler particle analyzer) experiments were performed using a GDI adjustable injector, which can adopt a different type of nozzle at free spray conditions. By analyzing the spray development behavior and distribution of droplet velocity and diameter based on a time series, and comparing these results with that of a single-hole nozzle, the effects of the group-hole nozzle on the spray characteristics in a GDI injection were elucidated. Experimental results showed that the development processes of spray behavior from a group-hole nozzle were similar to that of the single-hole nozzle. Both the sprays had similar spray tip penetration and dispersion at the same stages of development. However, owing to the constant spray momentum from a spray interaction, the spray behavior from the group-hole nozzle seemed to be more stable than that of the single-hole nozzle. In terms of the averaged droplet size, the group-hole nozzle held an advantage over the single-hole nozzle in decreasing Sauter mean diameter (SMD) by approximately 2 ?m. In addition, in comparison to the spatial distribution of droplet diameter and velocity between them, it can be confirmed that the group-hole nozzle has strong effects on reduction in diameter as well as rapid dispersion of droplet due to active air entrainment. These atomization characteristics are considered as an important advantages for improving mixture formation in GDI engine.

Sanghoon Lee; Sungwook Park

2014-01-01T23:59:59.000Z

169

Vehicle Technologies Office Merit Review 2014: Spray Combustion Cross-Cut Engine Research  

Broader source: Energy.gov [DOE]

Presentation given by Sandia National Laboratories at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about spray conbustion...

170

Modeling and Control of High-Velocity Oxygen-Fuel (HVOF) Thermal Spray: A Tutorial Review  

E-Print Network [OSTI]

vs. Fuzzy Logic: Simple Tools to Predict and Control Complexfuzzy logic (Ref 73, 74). For the HVOF thermal spray process, a feedback control

Li, Mingheng; Christofides, Panagiotis D.

2009-01-01T23:59:59.000Z

171

Microstructure and tensile properties of spray formed gamma Ti48.9at.%Al  

SciTech Connect (OSTI)

Until now only a limited number of spray forming experiments on TiAl were reported, and the mechanical data of sprayed material of these alloys are rather rare. In this paper, the application of the EIGA-technique (Electrode Induction Melting Gas Atomization) for spray forming of binary Ti48.9Al(at.%) is reported. Sprayed deposits, obtained under near optimum conditions are tensile tested at room temperature and microstructurally characterized. The results are compared to similar alloys obtained by other process routes.

Liu, K.W. [GKSS Forschungszentrum, Geesthacht (Germany)] [GKSS Forschungszentrum, Geesthacht (Germany); [Univ. of Science and Technology, Beijing (China). State Kay Lab for Advanced Metals and Materials; Gerling, R.; Schimansky, F.P. [GKSS Forschungszentrum, Geesthacht (Germany)] [GKSS Forschungszentrum, Geesthacht (Germany)

1999-02-05T23:59:59.000Z

172

E-Print Network 3.0 - arc spray deposition Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Acta mater. 49 (2001) 15651575 www.elsevier.comlocateactamat Summary: AlY bond coat and atmospheric plasma spray (APS) zirconia top coat were deposited onto a nickel...

173

E-Print Network 3.0 - azelastine nasal spray Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

supplements Nasal spray... Pain relievers, including aspirin Cold remedies, including cough syrup, ... Source: Lu, Guoiqng - Department of Biology, University of Nebraska-Omaha...

174

Experimental study on macroscopic spray characteristics after impingement in a slit-type GDI injector  

Science Journals Connector (OSTI)

In this paper, an experimental study on the wall-impinging spray of the slit-type GDI injector is presented. To examine the effects...

C. H. Lee; K. H. Lee

2008-06-01T23:59:59.000Z

175

Numerical and experimental analysis of spray atomization characteristics of a GDI injector  

Science Journals Connector (OSTI)

In this study, numerical and experimental analysis on the spray atomization characteristics of a GDI injector is performed. For numerical approach,...

Sung Wook Park; Hyung Jun Kim; Chang Sik Lee

2003-03-01T23:59:59.000Z

176

In situ performance evaluation of spray polyurethane foam in the exterior insulation basement system (EIBS)  

Science Journals Connector (OSTI)

In 1995, a joint research project11The consortium included Canadian Plastics Industry Association, Expanded Polystyrene Association of Canada, Canadian Urethane Foam Contractors Association, Owens Corning Inc. and Roxul Inc. with the Institute for Research in Construction was initiated to assess the in situ thermal performance of a number of insulation products used as exterior basement insulation in contact with the ground. Sixteen insulation specimens measuring 610 mm and 1220 mm wide were installed on the exterior basement walls of an experimental building, test hut no. 1, located on NRC campus in Ottawa. These specimens were instrumented prior to backfilling and their thermal performance was monitored over two full years. Soil temperatures and moisture content were monitored concurrently. Weather events were recorded daily. This paper focuses on the performance of the two spray polyurethane foam (SPF) specimens assessed in this experiment. Through analysis of the surface temperatures of the specimens, water movement was detected at the insulation/soil interface through various periods of heavy rain and major thaws throughout the two-year period. Over the same period, the surface of the concrete on the inside of the insulation showed no evidence of water penetration through the SPF layer. The insulation specimens were retrieved after 31 months of exposure in the soil. Good and continuous surface adhesion was also noted on removal. Samples were taken from these exposed specimens. When tested in the lab, after recovery and drying of the specimens, the compressive strengths of the SPF samples were slightly higher than those tested at the beginning of the experiment. For the conditions recorded over two years of monitoring, the thermal performance of each insulation specimen was found to be stable through the heating season. The thermal performance appeared not to be significantly affected by water movement at the exterior face of the insulation. One SPF specimen showed steady thermal performance through two heating seasons while the other actually improved in the second year. It was concluded that the key performance factors of the 76 mm thick SPF specimens sprayed on the exterior surfaces of the concrete basement wall all remained at a very good level, i.e., the in situ thermal resistance, the compressive strength, and the moisture contents of the specimens.

M.C. Swinton; W. Maref; M.T. Bomberg; M.K. Kumaran; N. Normandin

2006-01-01T23:59:59.000Z

177

Spray Foam Exterior Insulation with Stand-Off Furring  

SciTech Connect (OSTI)

IBACOS, in collaboration with GreenHomes America, was contracted by the New York State Energy Research and Development Authority to research exterior wall insulation solutions. This research investigated cost-effective deep energy retrofit (DER) solutions for improving the building shell exterior while achieving a cost-reduction goal, including reduced labor costs to reach a 50/50 split between material and labor. The strategies included exterior wall insulation plus energy upgrades as needed in the attic, mechanical and ventilation systems, and basement band joist, walls, and floors. The work can be integrated with other home improvements such as siding or window replacement. This strategy minimizes physical connections to existing wall studs, encapsulates existing siding materials (including lead paint) with spray foam, and creates a vented rain screen assembly to promote drying. GreenHomes America applied construction details created by IBACOS to a test home. 2x4 framing members were attached to the wall at band joists and top plates using 'L' clips, with spray foam insulating the wall after framing was installed. Windows were installed simultaneously with the framing, including extension jambs. The use of clips in specific areas provided the best strength potential, and 'picture framing' the spray foam held the 2x4s in place. Short-term testing was performed at this house, with monitoring equipment installed for long-term testing. Testing measurements will be provided in a later report, as well as utility impact (before and after), costs (labor and materials), construction time, standard specifications, and analysis for the exterior wall insulation strategy.

Herk, A.; Baker, R.; Prahl, D.

2014-03-01T23:59:59.000Z

178

Pressurized feed-injection spray-forming apparatus  

DOE Patents [OSTI]

A spray apparatus and method for injecting a heated, pressurized liquid in a first predetermined direction into a pressurized gas flow that is flowing in a second predetermined direction, to provide for atomizing and admixing the liquid with the gas to form a two-phase mixture. A valve is also disposed within the injected liquid conduit to provide for a pulsed injection of the liquid and timed deposit of the atomized gas phase. Preferred embodiments include multiple liquid feed ports and reservoirs to provide for multiphase mixtures of metals, ceramics, and polymers.

Berry, Ray A. (Idaho Falls, ID); Fincke, James R. (Idaho Falls, ID); McHugh, Kevin M. (Idaho Falls, ID)

1995-01-01T23:59:59.000Z

179

Development of spray coated cathodes for RITS-6.  

SciTech Connect (OSTI)

This report documents work conducted in FY13 to conduct a feasibility study on thermal spray coated cathodes to be used in the RITS-6 accelerator in an attempt to improve surface uniformity and repeatability. Currently, the cathodes are coated with colloidal silver by means of painting by hand. It is believed that improving the cathode coating process could simplify experimental setup and improve flash x-ray radiographic performance. This report documents the experimental setup and summarizes the results of our feasibility study. Lastly, it describes the path forward and potential challenges that must be overcome in order to improve the process for creating uniform and repeatable silver coatings for cathodes.

Simpson, Sean; Leckbee, Joshua J.; Miller, Stephen Samuel

2013-09-01T23:59:59.000Z

180

Method and apparatus for atomization and spraying of molten metals  

DOE Patents [OSTI]

A method and device for dispersing molten metal into fine particulate spray, the method comprises applying an electric current through the molten metal and simultaneously applying a magnetic field to the molten metal in a plane perpendicular to the electric current, whereby the molten metal is caused to form into droplets at an angle perpendicular to both the electric current and the magnetic field. The device comprises a structure for providing a molten metal, appropriately arranged electrodes for applying an electric current through the molten metal, and a magnet for providing a magnetic field in a plane perpendicular to the electric current. 11 figs.

Hobson, D.O.; Alexeff, I.; Sikka, V.K.

1988-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Front surface thermal property measurements of air plasma spray coatings  

SciTech Connect (OSTI)

A front-surface measurement for determining the thermal properties of thermal barrier coatings has been applied to air plasma spray coatings. The measurement is used to determine all independent thermal properties of the coating simultaneously. Furthermore, with minimal requirements placed on the sample and zero sample preparation, measurements can be made under previously impossible conditions, such as on serviceable engine parts. Previous application of this technique was limited to relatively thin coatings, where a one-dimensional heat transfer model is applied. In this paper, the influence of heat spreading on the measurement of thicker coatings is investigated with the development of a two-dimensional heat transfer model.

Bennett, Ted; Kakuda, Tyler [University of California, Santa Barbara, California 93106-5070 (United States); Kulkarni, Anand [Siemens Energy, Orlando, Florida 32826-2399 (United States)

2009-04-15T23:59:59.000Z

182

Pressurized feed-injection spray-forming apparatus  

DOE Patents [OSTI]

A spray apparatus and method are disclosed for injecting a heated, pressurized liquid in a first predetermined direction into a pressurized gas flow that is flowing in a second predetermined direction, to provide for atomizing and admixing the liquid with the gas to form a two-phase mixture. A valve is also disposed within the injected liquid conduit to provide for a pulsed injection of the liquid and timed deposit of the atomized gas phase. Preferred embodiments include multiple liquid feed ports and reservoirs to provide for multiphase mixtures of metals, ceramics, and polymers. 22 figs.

Berry, R.A.; Fincke, J.R.; McHugh, K.M.

1995-08-29T23:59:59.000Z

183

Evaluation of a Direct Evaporative Roof-Spray Cooling System  

E-Print Network [OSTI]

involved several steps. PVC tubing, with special spray orifices, was mounted on wooden blodts. Solenoid valves were connected to the PVC tubing and then to the controller which activated them. The controller was also connected to a 95 degree F thermo.... The remainder of the thermocouples were used with thermal flux meters to measure the heat flux through the roof. Four thermal flux meters were built by placing a piece of plexiglass (k = 0.1125 Btulh ft F) with a thermo-. couple on each side between two...

Carrasco, A.; Pittard, R.; Kondepudi, S. N.; Somasundaram, S.

1987-01-01T23:59:59.000Z

184

E-Print Network 3.0 - al-al2o3 cold spray Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(2001) Cryogen Spray Cooling: Effects of Droplet Size... and Spray Density on Heat Removal Brian M. Pikkula, BS, Jorge H. Torres, MD. PhD, James W. Tunnell, BS... and...

185

Apparatus for fixed bed coal gasification  

DOE Patents [OSTI]

An apparatus for fixed-bed coal gasification is described in which coal such as caking coal is continuously pyrolyzed with clump formation inhibited, by combining the coal with a combustible gas and an oxidant, and then continually feeding the pyrolyzed coal under pressure and elevated temperature into the gasification region of a pressure vessel. The materials in the pressure vessel are allowed to react with the gasifying agents in order to allow the carbon contents of the pyrolyzed coal to be completely oxidized. The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

Sadowski, Richard S. (Greenville, SC)

1992-01-01T23:59:59.000Z

186

Spray evaporation heat transfer performance in R-123 in tube bundles  

SciTech Connect (OSTI)

This study focuses on evaluating the heat transfer performance of refrigerant R-123 in the spray evaporation environment for pure refrigerant and for the case of lubricant addition. Tests were conducted with triangular-pitch tube bundles made from enhanced boiling tubes, enhanced condensation tubes, and plain-surface tubes. A second enhanced boiling surface tube bundle, made with a square-pitch tube alignment, was also tested so a comparison could be made between the square- and triangular-pitch geometries. In addition to pure refrigerant work, experiments were performed with small concentrations of a 305 SUS naphthenic mineral oil to evaluate its effect on falling-film heat transfer performance. Two different refrigerant supply rates were used in this work so the effects of film-feed supply rate could be interpreted from the data. Refrigerant was introduced to the test section via low-pressure-drop, wide-angle nozzles located directly over the tube bundle. Data were taken over a heat flux range of 40 kW/m{sup 2} (12,688 Btu/[h{center_dot}ft{sup 2}]) to 19 kW/m{sup 2} (6,027 Btu/[h{center_dot}ft{sup 2}]), while the refrigerant supply rate remained fixed. Collector tests were performed in parallel with the heat transfer experiments so the amount of refrigerant bypassing the tube bundle could be determined. It was found that the heat transfer coefficients were dependent upon film-feed supply rate, oil concentration, and heat flux. The enhanced boiling surface yielded higher heat transfer coefficients than either the enhanced condensation surface or the plain surface.

Moeykens, S. [Trane Co., LaCrosse, WI (United States); Kelly, J.E. [Kansas State Univ., Manhattan, KS (United States). Dept. of Mechanical Engineering; Pate, M.B. [Iowa State Univ., Ames, IA (United States). Mechanical Engineering Dept.

1996-12-31T23:59:59.000Z

187

Atomization and Sprays, 19(9):885903, 2009 ASSESSMENT OF ATOMIZATION MODELS  

E-Print Network [OSTI]

, as well as detailed measurements for evaporating sprays. The data include spray penetration, axial velocity, liquid mass distribution, cone angle, Sauter mean diameter, and vapor penetration. Simulations a detailed comparison of predictions with x-ray and optical measurements. The effect of rate of injection

Aggarwal, Suresh K.

188

LES/probability density function approach for the simulation of an ethanol spray flame  

E-Print Network [OSTI]

LES/probability density function approach for the simulation of an ethanol spray flame Colin Heye a an experimental pilot-stabilized ethanol spray flame. In this particular flame, droplet evaporation occurs away: Large-eddy simulation; Probability density function; Flamelet/progress variable approach; Ethanol

Raman, Venkat

189

Trajectory Optimization of Spray Painting Robot Based on Adapted Genetic Algorithm  

Science Journals Connector (OSTI)

Due to the complex geometry of free-form surfaces, generating optimization trajectories of spray gun to satisfy paint uniformity requirement is still a challenge. A quadratic function of the paint deposition rate on a plane was proposed according to ... Keywords: trajectory optimization, spray painting robot, genetic algorithm

Fa-zhong Li; De-an Zhao; Gui-hua Xie

2009-04-01T23:59:59.000Z

190

Light intensity and image visualization of GDI injector sprays according to nozzle hole arrangements  

Science Journals Connector (OSTI)

Abstract The light intensity measurement and image visualization of multi-hole injection spray due to different hole arrangements and hole numbers were investigated. The light intensities and behavior characteristics of the GDI spray were analyzed through the axial and diagonal spray penetration, cone angle, and spray area from the spray images by using the image visualization system and image analysis system. The atomization performance of GDI injectors was analyzed by the local and overall Sauter mean diameter (SMD) measurement. It is revealed that the higher injection pressure shows higher light intensity levels due to the strong vortices and collision by a high injection pressure. The light intensity level at the outer and end region of the spray shows lower value compared to that at the center spray region. In all of test injectors, the increased injection pressure leads to the decrease of the droplet size distribution in the initial spray. But, there is little difference of the droplet size at low and high injection pressure in middle and latter period after the injection. The overall SMD of GDI injectors showed from 14 to 23.14 ?m.

Hyung Jun Kim; Su Han Park; Chang Sik Lee

2014-01-01T23:59:59.000Z

191

Diamond Jet Hybrid HVOF Thermal Spray:? Rule-Based Modeling of Coating Microstructure  

Science Journals Connector (OSTI)

This paper focuses on the computational modeling and simulation of the microstructure of coatings produced by an industrial high-velocity oxygen-fuel (HVOF) thermal spray process (Diamond Jet hybrid gun, Sulzer Metco, Westbury, NY). ... 1 Featured with a high gas/particle velocity and a relatively low gas/particle temperature when compared with plasma spraying, HVOF thermal spray is a powerful tool for the fabrication of coatings of metals, cermets, and composites. ... To improve coating repeatability and process performance, much experimental work has been done in the past decade to study the effects of key process parameters, such as the gas flow rate, fuel/oxygen ratio, and spray distance, on the physical and mechanical properties of HVOF thermally sprayed coatings. ...

Dan Shi; Mingheng Li; Panagiotis D. Christofides

2004-01-03T23:59:59.000Z

192

Compact Fixed-exit UHV DCM for XAFS  

SciTech Connect (OSTI)

A double-crystal, UHV-compatible monochromator for XAFS applications at bending magnet beamlines has been designed. It uses two crystal sets, Si(111) and (311), on a common central rotation axis driven by an ex-vacuo goniometer. All mechanical and electrical components are mounted on a 400 mm UHV flange which is attached to a compact vacuum chamber. The first crystals are water cooled using connector- and bellowless tubing through the fluidic sealed feedthrough of the central rotation. The first crystal set is mounted off-axis and can be translated vertically to keep the fixed exit condition. The second crystal set uses small crystals of the same size as the first. In order to accept the reflected beam of the first crystal at small Bragg angles, it is tangentially translated along the beam. The angle can be varied from 5 deg. to 55.5 deg. resulting in a total energy range 2.4 - 43.4 keV for Si(111)/(311). Crystal sets are interchangeable by translating the vacuum chamber. Angle encoding is achieved by a Renishaw incremental optical encoder in vacuo.

Rickers, K.; Brueggmann, U.; Drube, W.; Herrmann, M.; Heuer, J.; Welter, E.; Schulte-Schrepping, H.; Schulz-Ritter, H. [Hamburger Synchrotronstrahlungslabor HASYLAB am Deutschen Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg (Germany)

2007-01-19T23:59:59.000Z

193

Fixed bed downdraft gasification of paper industry wastes  

Science Journals Connector (OSTI)

The two main wastes generated from secondary fibre paper mills are rejects (composed mainly of plastics and fibres) and de-inking sludge, both of which are evolved from the pulping process during paper manufacture. The current practice for the disposal of these wastes is either by land-spreading or land-filling. This work explores the gasification of blends of pre-conditioned rejects and de-inking sludge pellets with mixed wood chips in an Imbert type fixed bed downdraft gasifier with a maximum feeding capacity of 10 kg/h. The producer gases evolved would generate combined heat and power (CHP) in an internal combustion engine. The results show that as much as 80 wt.% of a brown paper mill’s rejects (consisting of 20 wt.% mixed plastics and 80 wt.% paper fibres) could be successfully gasified in a blend with 20 wt.% mixed wood chips. The producer gas composition was 16.24% H2, 23.34% CO, 12.71% CO2 5.21% CH4 and 42.49% N2 (v/v%) with a higher heating value of 7.3 MJ/Nm3. After the removal of tar and water condensate the producer gas was of sufficient calorific value and flow rate to power a 10 kWe gas engine. Some blends using rejects from other mill types were not successful, and the limiting factor was usually the agglomeration of plastics present within the fuel.

M. Ouadi; J.G. Brammer; M. Kay; A. Hornung

2013-01-01T23:59:59.000Z

194

Diesel Particulate Oxidation Model: Combined Effects of Fixed...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Volatile Carbon Diesel Particulate Oxidation Model: Combined Effects of Fixed & Volatile Carbon Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research...

195

Mathematical modelling of Inconel 718 particles in HVOF thermal spraying  

Science Journals Connector (OSTI)

High velocity oxygen fuel (HVOF) thermal spray technology is able to produce very dense coating without over-heating powder particles. The quality of coating is directly related to the particle parameters such as velocity, temperature and state of melting or solidification. In order to obtain this particle data, mathematical models are developed to predict particle dynamic behaviour in a liquid fuelled high velocity oxy-fuel thermal spray gun. The particle transport equations are solved in a Lagrangian manner and coupled with the three-dimensional, chemically reacting, turbulent gas flow. The melting and solidification within particles as a result of heat exchange with the surrounding gas flow is solved numerically. The in-flight particle characteristics of Inconel 718 are studied and the effects of injection parameters on particle behavior are examined. The computational results show that the particles smaller than 10 ?m undergo melting and solidification prior to impact while the particle larger than 20 ?m never reach liquid state during the process.

S. Kamnis; S. Gu; N. Zeoli

2008-01-01T23:59:59.000Z

196

Colloidal spray method for low cost thin coating deposition  

DOE Patents [OSTI]

A dense or porous coating of material is deposited onto a substrate by forcing a colloidal suspension through an ultrasonic nebulizer and spraying a fine mist of particles in a carrier medium onto a sufficiently heated substrate. The spraying rate is essentially matched to the evaporation rate of the carrier liquid from the substrate to produce a coating that is uniformly distributed over the surface of the substrate. Following deposition to a sufficient coating thickness, a single sintering step may be used to produce a dense ceramic coating. Using this method, coatings ranging in thickness from about one to several hundred microns can be obtained. By using a plurality of compounds in the colloidal suspension, coatings of mixed composition can be obtained. By using a plurality of solutions and separate pumps and a single or multiple ultrasonic nebulizer(s), and varying the individual pumping rates and/or the concentrations of the solutions, a coating of mixed and discontinuously graded (e.g., stepped) or continuously graded layers may be obtained. This method is particularly useful for depositing ceramic coatings. Dense ceramic coating materials on porous substrates are useful in providing improved electrode performance in devices such as high power density solid oxide fuel cells. Dense ceramic coatings obtained by the invention are also useful for gas turbine blade coatings, sensors, steam electrolyzers, etc. The invention has general use in preparation of systems requiring durable and chemically resistant coatings, or coatings having other specific chemical or physical properties.

Pham, Ai-Quoc (San Jose, CA); Glass, Robert S. (Livermore, CA); Lee, Tae H. (Naperville, IL)

2002-01-01T23:59:59.000Z

197

ILASS Americas, 21th Annual Conference on Liquid Atomization and Spray Systems, Orlando, Florida, May18-2, 2008  

E-Print Network [OSTI]

. In this work, flashing atomization is introduced in a spray burner used in flame spray pyrolysis (FSP, May18-2, 2008 Influence of a Coaxial Gas Flow on a Flashing Liquid Jet: Implications for Flame Spray Center for Environmental Research and Technology Riverside, CA 92507 Abstract Flashing or thermodynamic

Aguilar, Guillermo

198

Method for the assessment of airborne off-target pesticide spray concentrations due to aircraft wing-tip vortex  

E-Print Network [OSTI]

that spherical spray droplets are transported by a two dimensional parametric representation of a spray-engulfing aircraft wing-tip vortex pair. Two distinctive flow regions were considered for the spray-vortex dynamics. The first occurs in the vicinity...

Oliva, Sergio Eduardo

2012-06-07T23:59:59.000Z

199

CONSTRUCTION OF MULTIPLY FIXED n-VALUED MAPS  

E-Print Network [OSTI]

CONSTRUCTION OF MULTIPLY FIXED n-VALUED MAPS Robert F. Brown Department of Mathematics University of California Los Angeles, CA 90095-1555 e-mail: rfb@math.ucla.edu September 29, 2014 Abstract A self-map, either single-valued or multi-valued, is multiply fixed if every map homotopic to it has at least two

Brown, Robert F.

200

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES  

E-Print Network [OSTI]

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES Fabien FouiHen, INERIS, Parc. Reflections led on this accident have pushed to consider the phenomenon of tank pressurization as a potential initiating event of the fire ball observed. In concrete terms, when a fixed roof storage tank is surrounded

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Steady periodic waves bifurcating for fixed-depth rotational flows  

E-Print Network [OSTI]

-current interactions [29, 37] or flows generated by wind-shear [30] (see [6] for a comprehensive discussion than the mass-flux. It is important to note that fixing the mass-flux p0 does not fix the depth d

202

Portfolio optimization with linear and fixed transaction costs  

E-Print Network [OSTI]

Portfolio optimization with linear and fixed transaction costs Miguel Sousa Lobo1 Maryam Fazel2 optimization with linear and fixed transaction costs Abstract We consider the problem of portfolio selection of the return, and bounds on different shortfall probabilities are efficiently handled by convex optimization

203

Water quality Water quantity  

E-Print Network [OSTI]

01-1 · Water quality · Water quantity · Remediation strategies MinE 422: Water Resources: Younger, Banwart and Hedin. 2002. Mine Water. Hydrology, Pollution, Remediation. Impacts of mining on water mining ­ Often the largest long term issue ­ Water quality affected, surface/ground water pollution

Boisvert, Jeff

204

Water quality Water quantity  

E-Print Network [OSTI]

· Water quality · Water quantity · Remediation strategies MinE 422: Water Resources: Younger, Banwart and Hedin. 2002. Mine Water. Hydrology, Pollution, Remediation. Impacts of mining on water mining ­ Often the largest long term issue ­ Water quality affected, surface/ground water pollution

Boisvert, Jeff

205

NACOM code for analysis of postulated sodium spray fires in LMFBRs  

SciTech Connect (OSTI)

An analysis of potential sodium spills and fires in liquid metal fast breeder reactors has been made to assess the maximum equipment cell loading conditions. A computer code called NACOM (sodium combustion) has been developed at Brookhaven National Laobratory (BNL) to analyze sodium spray fires. This report contains a detailed description of physical models used in this code as well as programming aspects. The single droplet combustion model and the model describing the droplets' motion are verified. Comparisons between NACOM predictions and SPRAY-3A predictions of the Atomics International (AI) LTV Jet Tests are made. Good agreement is found between the NACOM predictions and the experimental data. NACOM predictions of the pressure rise are more accurate than SPRAY-3A predictions for most of the cases studied. The code has been verified for oxygen concentrations ranging from 0 to 21%. NACOM utilizes more realistic single droplet and spray combustion models than SPRAY-3A. Moreover, NACOM does not utilize adjustable parameters for the burning rate equations, contrary to the approach taken with SPRAY-3A. Thus, the NACOM code is a more reliable code for use in the analysis of large-scale sodium spray fires in LMFBR containment cells. 24 refs., 32 figs.

Tsai, S.S.

1980-03-01T23:59:59.000Z

206

Ducts Sealing Using Injected Spray Sealant, Raleigh, North Carolina (Fact Sheet)  

SciTech Connect (OSTI)

In multifamily and attached buildings, traditional duct sealing methods are often impractical or costly and disruptive because of the difficulty in accessing leakage sites. In this project, two retrofit duct sealing techniques - manually-applied sealants and injecting a spray sealant, were implemented in several low-rise multi-unit buildings. An analysis on the cost and performance of the two methods are presented. Each method was used in twenty housing units: approximately half of each group of units are single story and the remainder two-story. Results show that duct leakage to the outside was reduced by an average of 59% through the use of manual methods, and by 90% in the units where the injected spray sealant was used. It was found that 73% of the leakage reduction in homes that were treated with injected spray sealant was attributable to the manual sealing done at boots, returns and the air handler. The cost of manually-applying sealant ranged from $275 to $511 per unit and for the injected spray sealant the cost was $700 per unit. Modeling suggests a simple payback of 2.2 years for manual sealing and 4.7 years for the injected spray sealant system. Utility bills were collected for one year before and after the retrofits. Utility bill analysis shows 14% and 16% energy savings using injected spray sealant system and hand sealing procedure respectively in heating season whereas in cooling season, energy savings using injected spray sealant system and hand sealing were both 16%.

Not Available

2014-03-01T23:59:59.000Z

207

Engines - Fuel Injection and Spray Research - Dynamic Imaging of Injector  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Fuel injectors in motion Fuel injectors in motion This animated image is a result of the high penetrating power of X-rays which make it possible to permeate the outer steel structure and capture the internal components of fuel injectors in motion. Dynamic Imaging of Injector Operation The high-penetrating, powerful X-rays go through the outer steel structure to get a picture of the fuel injector parts as they move. The high X-ray flux at Argonne's APS makes this possible. These measurements are critical for the development of computational spray models, since they can precisely measure the time-dependent geometry of the fuel passages inside the injector. Injector manufacturers also use these measurements since they can reveal whether a particular component is functioning as designed.

208

Reaction zone visualisation in swirling spray n-heptane flames  

E-Print Network [OSTI]

process and consumed in the subsequent high temperature oxidation. Formaldehyde LIF was used for autoignition of methane jets [6], methanol, ethanol and acetone spray jet flames [7,8], and diesel fuel [9-11] and n-heptane [11,12] in HCCI engines. Najm... intensifier was 30,000 FL/FC and 80,000 FL/FC for CH2O and OH respectively. The laser powers were 12 mJ/pulse for OH PLIF and 300 mJ/pulse for CH2O PLIF. The intensifiers were triggered off the Q switch of each laser 6 with a gate of 220 ns. The CH2O PLIF...

Yuan, R.; Kariuki, J.; Dowlut, A.; Balachandran, R.; Mastorakos, E.

2014-06-26T23:59:59.000Z

209

Erosion-corrosion of thermal sprayed coatings in FBC boilers  

Science Journals Connector (OSTI)

Varieties of bed ash and fly ash were retrieved from operating fluidized bed combustor (FBC) boilers firing different fuels in North America and Europe. Using these ashes, the relative erosion-corrosion resistances of HVOF Cr3C2?NiCr coating and several other thermal sprayed coatings were determined in an elevated temperature blast nozzle erosion tester. Test conditions attempted to simulate erosive conditions found at the refractory—waterwall interface and in the convection pass region in tubular heat exchangers of FBC boilers. Erosion-corrosion (E-C) wastage mechanisms of the structural metals (AISI 1018, ASTM SA213-T22) were discussed and compared with the E-C wastage of HVOF Cr3C2?NiCr cermet coatings. The relatively different erosivities of ashes retrieved from North America and from Europe were also discussed.

Buqian Wang

1996-01-01T23:59:59.000Z

210

Containment system for supercritical water oxidation reactor  

DOE Patents [OSTI]

A system is described for containment of a supercritical water oxidation reactor in the event of a rupture of the reactor. The system includes a containment for housing the reaction vessel and a communicating chamber for holding a volume of coolant, such as water. The coolant is recirculated and sprayed to entrain and cool any reactants that might have escaped from the reaction vessel. Baffles at the entrance to the chamber prevent the sprayed coolant from contacting the reaction vessel. An impact-absorbing layer is positioned between the vessel and the containment to at least partially absorb momentum of any fragments propelled by the rupturing vessel. Remote, quick-disconnecting fittings exterior to the containment, in cooperation with shut-off valves, enable the vessel to be isolated and the system safely taken off-line. Normally-closed orifices throughout the containment and chamber enable decontamination of interior surfaces when necessary. 2 figures.

Chastagner, P.

1994-07-05T23:59:59.000Z

211

A new compact fixed-point blackbody furnace  

SciTech Connect (OSTI)

More and more NMIs are realizing their primary scale themselves with fixed-point blackbodies as their reference standard. However, commercially available fixed-point blackbody furnaces of sufficient quality are not always easy to obtain. CHINO Corp. and NMIJ, AIST jointly developed a new compact fixed-point blackbody furnace. The new furnace has such features as 1) improved temperature uniformity when compared to previous products, enabling better plateau quality, 2) adoption of the hybrid fixed-point cell structure with internal insulation to improve robustness and thereby to extend lifetime, 3) easily ejectable and replaceable heater unit and fixed-point cell design, leading to reduced maintenance cost, 4) interchangeability among multiple fixed points from In to Cu points. The replaceable cell feature facilitates long term maintenance of the scale through management of a group of fixed-point cells of the same type. The compact furnace is easily transportable and therefore can also function as a traveling standard for disseminating the radiation temperature scale, and for maintaining the scale at the secondary level and industrial calibration laboratories. It is expected that the furnace will play a key role of the traveling standard in the anticipated APMP supplementary comparison of the radiation thermometry scale.

Hiraka, K.; Oikawa, H.; Shimizu, T.; Kadoya, S.; Kobayashi, T. [CHINO CORPORATION, Itabashi, Tokyo (Japan)] [CHINO CORPORATION, Itabashi, Tokyo (Japan); Yamada, Y.; Ishii, J. [National Metrology Institute of Japan, AIST, Tsukuba, Ibaraki (Japan)] [National Metrology Institute of Japan, AIST, Tsukuba, Ibaraki (Japan)

2013-09-11T23:59:59.000Z

212

Spray drying and attrition behavior of iron catalysts for slurry phase Fischer-Tropsch synthesis  

E-Print Network [OSTI]

This thesis describes results of a study aimed at developing and evaluating attrition resistant iron catalysts prepared by spray drying technique. These catalysts are intended for Fischer-Tropsch (F-T) synthesis in a slurry bubble column reactor...

Carreto Vazquez, Victor Hugo

2004-11-15T23:59:59.000Z

213

E-Print Network 3.0 - air-assisted orchard spraying Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Soc. 118: 2005. Proc. Fla. State Hort. Soc. 118:270-272. 2005. Summary: commercial-scale peach orchard during spring 2004. Bait sprays were applied by a battery powered hand...

214

Interfacial phenomena in thermally sprayed multiwalled carbon nanotube reinforced aluminum nanocomposite  

Science Journals Connector (OSTI)

The interfacial phenomena in thermally sprayed (plasma and high-velocity oxyfuel spraying) hypereutectic Al–Si composite with multiwalled carbon nanotube (MWCNT) reinforcement have been analyzed both theoretically and experimentally. The formation of an ultrathin ?-SiC reaction layer at the interface is confirmed. Plasma sprayed composite exhibits a thicker SiC layer (?5 nm) than the high-velocity oxyfuel sprayed composite (?2 nm). The presence of SiC layer formation is also corroborated in a chemical vapor deposition experiment where Si was deposited on MWCNTs. The formation of ?-SiC is responsible for the improved wettability of the molten Al–Si alloy matrix with MWCNT reinforcement.

T. Laha; S. Kuchibhatla; S. Seal; W. Li; A. Agarwal

2007-01-01T23:59:59.000Z

215

Time domain terahertz detection of flaws within space shuttle sprayed on foam insulation  

Science Journals Connector (OSTI)

We demonstrate the detection of voids and disbonds intentionally incorporated within the sprayed on foam insulation of a space shuttle external tank mock-up segment using time domain...

Zimdars, David A; Valdmanis, Janis A; White, Jeffrey S; Winfree, William P; Madaras, Eric I; Stuk, G

216

Ceramic plasma-sprayed coating of melting crucibles for casting metal fuel slugs  

SciTech Connect (OSTI)

Thermal cycling and melt reaction studies of ceramic coatings plasma-sprayed on Nb substrates were carried out to evaluate the performance of barrier coatings for metallic fuel casting applications. Thermal cycling tests of the ceramic plasma-sprayed coatings to 1450 degrees C showed that HfN, TiC, ZrC, and Y2O3 coating had good cycling characteristics with few interconnected cracks even after 20 cycles. Interaction studies by 1550 degrees C melt dipping tests of the plasma-sprayed coatings also indicated that HfN and Y2O3 do not form significant reaction layer between U–20 wt.% Zr melt and the coating layer. Plasma-sprayed Y2O3 coating exhibited the most promising characteristics among HfN, TiC, ZrC, and Y2O3 coating.

K.H. Kim; C.T. Lee; C.B. Lee; R.S. Fielding; J.R. Kennedy

2013-10-01T23:59:59.000Z

217

Tribological behavior of plasma spray coatings for marine diesel engine piston ring and cylinder liner  

Science Journals Connector (OSTI)

High-temperature wear characteristics between plasma spray coated piston rings and cylinder liners were investigated to find the optimum combination of coating materials using the disc-on-plate reciprocating w...

Jong-Hyun Hwang; Myoung-Seoup Han…

2006-06-01T23:59:59.000Z

218

Clogging and Lump Formation During Atmospheric Plasma Spraying with Powder Injection Downstream the Plasma Gun  

Science Journals Connector (OSTI)

This study aimed to numerically and experimentally investigate lump formation during atmospheric plasma spraying with powder injection downstream the plasma gun exit. A first set of investigations...2-7wt.%Y2O3.....

Isabelle Choquet; Stefan Björklund; Jimmy Johansson…

2007-12-01T23:59:59.000Z

219

Development of a carcass sanitizing spray system for small and very small slaughterhouses  

E-Print Network [OSTI]

sanitizer spraying system (sanitizing halo system) was designed and assembled. The sanitizing halo system was tested at the Rosenthal Meat Science and Technology Center, Texas A&M University. Thirteen carcasses were split in halves. Thirteen halves were...

Rodriguez, Jose Gabriel

2007-04-25T23:59:59.000Z

220

E-Print Network 3.0 - aqueous nasal spray Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

50 From Vision to Touch: Exploring the five Summary: hide her eyes; short black boots accentuate long, bare legs. She pauses briefly before a spray... to focus from far to...

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Cooling Towers--Energy Conservation Strategies Preservative Spray Treatment Maintains Cooling Tower  

E-Print Network [OSTI]

Several problems common to most industrial wood framed cooling towers can be easily controlled with annual preservative spray treatment applications to the plenum area framework and drift eliminators. It eliminates the expensive periodic repairs due...

Reidenback, R.

222

Analysis of particle behavior in High-Velocity Oxy-Fuel thermal spraying process  

Science Journals Connector (OSTI)

This paper analyzes the behavior of coating particle as well as the gas flow both of inside and outside the High-Velocity Oxy-Fuel (HVOF) thermal spraying gun by using quasi-one-dimensional analysis and numerical...

Hiroshi Katanoda; Kazuyasu Matsuo

2003-08-01T23:59:59.000Z

223

Wear resistance of laser cladding and plasma spray welding layer on stainless steel surface  

Science Journals Connector (OSTI)

The effect of coatings, which are formed with laser cladding and plasma spray welding on 1Cr18Ni9Ti base metal, on wear resistance is studied, A 5-kW transverse flowing CO2 laser...

Wang, Xinlin; Shi, Shihong; Zheng, Qiguang

2004-01-01T23:59:59.000Z

224

Development of a uniform-droplet spray apparatus for high melting temperature metals  

E-Print Network [OSTI]

The building and operation of a high-temperature uniform droplet spraying (UDS) apparatus extend the performance and capabilities of powder based manufacturing processes. Although the main concepts of operation of the ...

Joumaa, Hady K

2005-01-01T23:59:59.000Z

225

Imaging and PDA analysis of a GDI spray in the near-nozzle region  

Science Journals Connector (OSTI)

This paper describes a combined LDA, PDA and imaging analysis of the pressure swirl spray in the near-nozzle region of a GDI injector. This innovative approach in the use...

Graham Wigley; Martin Goodwin; Graham Pitcher; Damien Blondel

2004-04-01T23:59:59.000Z

226

Thermally Sprayed SiC Coatings for Offshore Wind Turbine Bearing Applications  

Science Journals Connector (OSTI)

Tribological tests were conducted on thermally sprayed silicon carbide (SiC) coatings to investigate its potential on reducing wear in offshore wind turbine bearings. The tests were carried out under...3Al5O12) o...

F. Mubarok; S. Armada; I. Fagoaga; N. Espallargas

2013-12-01T23:59:59.000Z

227

Are sprayed LbL-films stratified? A first assessment of the nanostructure of spray-assembled multilayers by neutron reflectometry  

Science Journals Connector (OSTI)

We describe first neutron reflectometry experiments on spray-assembled polyelectrolyte multilayer films containing regularly spaced layers of perdeuterated poly(styrene sulfonate). From samples containing either only non-deuterated layers or containing a maximum of deuterated layers we obtain all model parameters (thicknesses, scattering length densities and roughnesses) required for calculating the reflectivities of multilayer films with a regular superlattice structure. For two different superlattice films we show that we obtain an excellent match between experimental data and calculated reflectivities without any free fit parameter. Our data clearly demonstrate that spray-assembled polyelectrolyte multilayers are indeed stratified although some structural parameters differ enormously from films prepared by classic dipping. Our present experiments confirm a substantial difference in thickness and suggest a reduced interfacial roughness in spray-assembled films.

Olivier Félix; Zhiqiang Zheng; Fabrice Cousin; Gero Decher

2009-01-01T23:59:59.000Z

228

Buildings Energy Data Book: 7.7 Water Use Standards  

Buildings Energy Data Book [EERE]

Water Use Standards Water Use Standards March 2012 7.7.1 Water Use Standards for Faucets, Showerheads, and Prerinse Spray Valves (1) Faucet Type (2) Maximum Flow Rate Kitchen Faucets (3) 2.2 gpm Lavatory Replacement Aerators 2.2 gpm Kitchen Faucets 2.2 gpm Kitchen Replacement Aerators 2.2 gpm Metering Faucets (4) 0.25 gal/cycle Showerheads (5) 2.5 gpm Commercial Prerinse Spray Valves (6) 1.6 gpm Note(s): Source(s): 1) Effective for products manufactured on or after January 1, 1994. 2) When measured at a flowing water pressure of 60 psi (414 kilopascals). 3) For sprayheads with independently-controlled orifices and manual controls, the maximum flow rate of each manual on/off orifice shall not exceed the maximum flow rate for a lavatory faucet. For those with collectively controlled orifices and manual controls, the

229

Optimization of Storage Location Assignment for Fixed Rack Systems  

Science Journals Connector (OSTI)

A multi-objective mathematical model and an improved Genetic Algorithm (GA) are formulated for storage location assignment of the fixed rack system. According to the assignment rules, ... efficiency and to keep t...

Qinghong Wu; Ying Zhang; Zongmin Ma

2010-01-01T23:59:59.000Z

230

Total effective dose equivalent associated with fixed uranium surface contamination  

SciTech Connect (OSTI)

This report provides the technical basis for establishing a uranium fixed-contamination action level, a fixed uranium surface contamination level exceeding the total radioactivity values of Appendix D of Title 10, Code of Federal Regulations, part 835 (10CFR835), but below which the monitoring, posting, and control requirements for Radiological Areas are not required for the area of the contamination. An area of fixed uranium contamination between 1,000 dpm/100 cm{sup 2} and that level corresponding to an annual total effective dose equivalent (TEDE) of 100 mrem requires only routine monitoring, posting to alert personnel of the contamination, and administrative control. The more extensive requirements for monitoring, posting, and control designated by 10CFR835 for Radiological Areas do not have to be applied for these intermediate fixed-contamination levels.

Bogard, J.S.; Hamm, R.N.; Ashley, J.C.; Turner, J.E.; England, C.A.; Swenson, D.E.; Brown, K.S.

1997-04-01T23:59:59.000Z

231

Fix photo here CSU Fullerton Exchange Program Application  

E-Print Network [OSTI]

Fix photo here CSU Fullerton Exchange Program Application Instructions: Don't abbreviate. Answer purposes (check one) CA resident Non-Resident F-1 Visa Student Any photo that shows your face well will do

de Lijser, Peter

232

Orlando Utilities Commission- Home Energy Efficiency Fix-Up Program  

Broader source: Energy.gov [DOE]

Orlando Utilities Commission's Home Energy Fix-Up Program provides assistance to low-income residential customers. To qualify for the program the total annual family income must be less than $40...

233

Complete Variable-Length \\Fix-Free" Codes David Gillman  

E-Print Network [OSTI]

Complete Variable-Length \\Fix-Free" Codes David Gillman Institute for Mathematics & Its-free codes Supported by NSF grant 9212184-CCR and Darpa contract N00014-92-J-1799. Email address: gillman

Rivest, Ronald L.

234

Thermodynamics of SU(3) gauge theory at fixed lattice spacing  

E-Print Network [OSTI]

We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

T. Umeda; S. Ejiri; S. Aoki; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

2008-10-09T23:59:59.000Z

235

Physical stability of spray dried solid dispersions of amorphous tolfenamic acid and polyvinylpyrolidone K30  

E-Print Network [OSTI]

PHYSICAL STABILITY OF SPRAY DRIED SOLID DISPERSIONS OF AMORPHOUS TOLFENAMIC ACID AND POLYVINYLPYRROLIDONE K-30 Pia Thybo The Danish University of Pharmaceutical Sciences Copenhagen, Denmark GPEN October 2006 Side 2 Pia Thybo The Danish University... Spray Drying -Continued ?Ability to handle solutions, suspensions, emulsions, pastes or melts ?Ability to handle materials under cGMP and aseptic drying conditions ?Ability to handle hazardous substances i.e. flammable solvents, dust explosion hazards...

Thybo, Pia

2006-10-25T23:59:59.000Z

236

Spray-chilling and carcass decontamination systems using lactic and acetic acid  

E-Print Network [OSTI]

SPRAY-CHILLING AND CARCASS DECONTANINATION SYSTEMS USING LAC1'IC AND ACETIC ACID A Thesis by PATRICK LAWRENCE HAMBY Submitted to the Graduate College of TEXAS A&M UNIVERSITY in partial fulfillment of the requirements for the degree NASTER... OF SCIENCE December 1986 Najor Subject; Food Science and Technology SPRAY-CHILLING AND CARCASS DECONTAMINATION SYSTEMS USING LACTIC AND ACETIC ACID A Thesis by PATRICK LAWRENCE NAMBY Approved as to style and content by: H. R. Cross (Co...

Hamby, Patrick Lawrence

2012-06-07T23:59:59.000Z

237

Elastic properties of porous structural ceramics produced by plasma-spraying  

SciTech Connect (OSTI)

This study focuses on the relationship between porosity and elastic stiffness of structural ceramic materials produced by plasma-spraying. Mg-Al-spinel was chosen as a model material and studied in as-sprayed condition as well as upon annealing to increasingly higher temperatures up to 1650 C. The detailed analysis of the stiffness and mass density evolution offers a deep insight into the initial microstructural state of the material and into the morphological changes that occur upon heat treatment.

Wanner, A. [Univ. Stuttgart (Germany). Inst. fuer Metallkunde

1998-12-31T23:59:59.000Z

238

NETL: Water-Energy Interface - Power Plant Water Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

An Innovative Fresh Water Production Process for Fossil Fired Power Plants An Innovative Fresh Water Production Process for Fossil Fired Power Plants Using Energy Stored in Main Condenser Cooling Water - University of Florida This project replaces the cooling tower in a fossil fired power plant with an innovative diffusion driven desalination (DDD) plant that will render the power plant a net producer of fresh water. The energy required to drive the desalination process comes from the main condenser cooling water, which would otherwise be discharged. Saline water is used to condense the low pressure steam exiting the turbine. The hot, saline water exiting the condenser is sprayed into the top of a diffusion tower. The diffusion tower is filled with high surface area packing material such as that used in air stripping towers to enhance the water/air surface area. Air is blown through the bottom of the tower and becomes humidified. The humidified air goes to a direct-contact condenser where the fresh water is condensed. This process has an advantage over conventional desalination technology in that it may be driven by waste heat with very low thermodynamic availability. Also, cold air is a byproduct of this process which can be used to cool buildings.

239

Water, water everywhere  

Science Journals Connector (OSTI)

... available water resources, either locally or globally, are by no means exhausted. At present desalination -- the removal of salt from sea water or brackish water -- is very ... or brackish water -- is very expensive, mainly because it consumes so much energy. Desalination provides less than 0.2 per cent of all the water used in the world ...

Philip Ball

2000-01-27T23:59:59.000Z

240

Plasma sprayed coatings as surface treatments of aluminum adherends  

SciTech Connect (OSTI)

Plasma sprayed coatings have been evaluated as surface treatments for aluminum substrates being prepared for adhesive bonding. Blends of an aluminum-silicon alloy and polyester give the best performance. To establish durability performance, wedge tests were done using four common epoxy adhesives without primers. In all cases, the 60%Al-Si/40%polyester coating gave results superior to those of FPL-etched specimens and, in some cases, performance equivalent to PAA specimens. This roughness provides excellent opportunity for mechanical interlocking or physical bonding and allows a complex interphase to be formed as the adhesive penetrates into the coating. Crack growth measurements and subsequent failure analysis using x-ray photoelectron spectroscopy (XPS) indicate that crack propagation occurs within this complex interphase. The results also show that the aluminum and polyester components are synergistic and blends of the two give better performance than either component by itself The aluminum gives strength to the coating while the polyester provides toughness and improves moisture resistance.

Davis, G.D.; Whisnant, P.L.; Groff, G.B.; Shaffer, D.K. [Lockheed Martin, Baltimore, MD (United States)] [and others

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Water Resources Water Quality and Water Treatment  

E-Print Network [OSTI]

Water Resources TD 603 Lecture 1: Water Quality and Water Treatment CTARA Indian Institute of Technology, Bombay 2nd November, 2011 #12;OVERVIEW Water Quality WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TRE OVERVIEW OF THE LECTURE 1. Water Distribution Schemes Hand Pump

Sohoni, Milind

242

Impact of Sea Spray on Air–Sea Fluxes. Part I: Results from Stochastic Simulations of Sea Spray Drops over the Ocean  

Science Journals Connector (OSTI)

The contributions of sea spray drops to the total air–sea exchanges of momentum, heat, and mass remain an open question. A number of factors obscure any simple quantification of their contribution; the per drop contribution to the fluxes is a ...

James A. Mueller; Fabrice Veron

2014-11-01T23:59:59.000Z

243

Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing  

SciTech Connect (OSTI)

Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid-1990's to provide durable and efficient building enclosures. However, there have been isolated moisture related incidents reported anecdotally that raise potential concerns about the overall hygrothermal performance of these systems. The incidents related to rainwater leakage and condensation concerns. Condensation concerns have been extensively studied by others and are not further discussed in this report. This project involved hygrothermal modeling of a range of rainwater leakage and field evaluations of in-service residential roofs using spray foam insulation. All of the roof assemblies modeled exhibited drying capacity to handle minor rainwater leakage. All field evaluation locations of in-service residential roofs had moisture contents well within the safe range for wood-based sheathing. Explorations of eleven in-service roof systems were completed. The exploration involved taking a sample of spray foam from the underside of the roof sheathing, exposing the sheathing, then taking a moisture content reading. All locations had moisture contents well within the safe range for wood-based sheathing. One full-roof failure was reviewed, as an industry partner was involved with replacing structurally failed roof sheathing. In this case the manufacturer's investigation report concluded that the spray foam was installed on wet OSB based on the observation that the spray foam did not adhere well to the substrate and the pore structure of the closed cell spray foam at the ccSPF/OSB interface was indicative of a wet substrate.

Grin, A.; Smegal, J.; Lstiburek, J.

2013-10-01T23:59:59.000Z

244

LDRD summary report. Part 1: initiation studies of thin film explosvies used for scabbling concrete. Part 2: investigation of spray techniques for use in explosive scabbling of concrete  

SciTech Connect (OSTI)

We describe a new method for the scabbling of concrete surfaces using a thin layer of explosive material sprayed onto the surfaces. We also developed a new explosive mixture that could be applied with commercial spray painting equipment. The first part of our record describes experiments that studied methods for the initiation of the sprayed explosive. We successfully initiated layers 0.36 mm thick using a commercial EBW detonator, a flying plate detonator, and by pellet impact. The second part of our report describes a survey of spray methods and tests with two commercial spray systems that we believe could be used for developing a robotic spray system.

Benham, R.A.; Bickes, R.W. Jr.; Grubelich, M.C.; Wackerbarth, D.E.; Brock, J.L.

1996-11-01T23:59:59.000Z

245

Water spray geoengineering to clean air pollution for mitigating haze in China’s cities  

Science Journals Connector (OSTI)

In the past 30 years, China has suffered from air pollution and heavy haze created by fast industrial ... This article reviews the techniques for remediation of air pollution. Then, I propose a geoengineering met...

Shaocai Yu

2014-03-01T23:59:59.000Z

246

Characterization of coal water slurry sprays from a positive displacement fuel injection system  

E-Print Network [OSTI]

, the cone angle increases and the penetration rate decreases. They also observed that the penetration rate was not strongly affected by concentration for slurries with loadings of upto 30% by weight. Benson et al. [10] reported results on a continous... of Rack Positions 72 84 SUMMARY . 89 CONCLUSIONS. 94 RECOMMENDATIONS. 96 REFERENCES. 98 APPENDIX A: NOMENCLATURE LIST 102 APPENDIX B: TABLES OF TEST CASES. . 104 APPENDIX C: CWS PENETRATION RESULTS BASED ON PRESSURES. 107 APPENDIX D: DIESEL...

Kumar Seshadri, Ajoy

2012-06-07T23:59:59.000Z

247

An experimental study on heat transfer from a horizontal heated circular cylinder enhanced by water spray.  

E-Print Network [OSTI]

??A series of experiments were conducted to investigate the heat transfer which occurs with a heated, constant heat flux, horizontal, single circular cylinder is exposed… (more)

Chau, Man Hei

2009-01-01T23:59:59.000Z

248

Renormalization of Quantum Anosov Maps: Reduction to Fixed Boundary Conditions  

E-Print Network [OSTI]

A renormalization scheme is introduced to study quantum Anosov maps (QAMs) on a torus for general boundary conditions (BCs), whose number ($k$) is always finite. It is shown that the quasienergy eigenvalue problem of a QAM for {\\em all} $k$ BCs is exactly equivalent to that of the renormalized QAM (with Planck's constant $\\hbar ^{\\prime}=\\hbar /k$) at some {\\em fixed} BCs that can be of four types. The quantum cat maps are, up to time reversal, fixed points of the renormalization transformation. Several results at fixed BCs, in particular the existence of a complete basis of ``crystalline'' eigenstates in a classical limit, can then be derived and understood in a simple and transparent way in the general-BCs framework.

Itzhack Dana

2000-05-18T23:59:59.000Z

249

Cheap Fixes for Beating the Heat Indoors | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Cheap Fixes for Beating the Heat Indoors Cheap Fixes for Beating the Heat Indoors Cheap Fixes for Beating the Heat Indoors July 25, 2013 - 11:20am Addthis Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Blinds are a great option for cooling your home in the summer. | Photo courtesy of ©iStockphoto/nycshooter Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy How can I participate? Instead of turning on the air conditioning, consider window treatments and fans to cool down your home. If your internal thermostat is melting like the rest of the U.S. right now, you probably could use some fanning, ice, or air conditioning. With that in mind, we are providing a rundown of the cheapest ways to keep your home

250

An order theoretic approach in fixed point theory  

E-Print Network [OSTI]

In the present article, we show the existence of a coupled fixed point for an order preserving mapping in a preordered left K-complete quasi-pseudometric space using a preorder induced by an appropriate function. We also define the concept of left-weakly related mappings on a preordered space and discuss common coupled fixed points for two and three left-weakly related mappings in the same space. Similar results are given for right-weakly related mappings, the dual notion of left-weakly related mappings.

Yaé Ulrich Gaba

2014-11-07T23:59:59.000Z

251

Spray-on foam insulations for launch vehicle cryogenic tanks  

Science Journals Connector (OSTI)

Spray-on foam insulation (SOFI) has been developed for use on the cryogenic tanks of space launch vehicles beginning in the 1960s with the Apollo program. The use of SOFI was further developed for the Space Shuttle program. The External Tank (ET) of the Space Shuttle, consisting of a forward liquid oxygen tank in line with an aft liquid hydrogen tank, requires thermal insulation over its outer surface to prevent ice formation and avoid in-flight damage to the ceramic tile thermal protection system on the adjacent Orbiter. The insulation also provides system control and stability throughout the lengthy process of cooldown, loading, and replenishing the tank. There are two main types of SOFI used on the ET: acreage (with the rind) and closeout (machined surface). The thermal performance of the seemingly simple SOFI system is a complex array of many variables starting with the large temperature difference of 200–260 K through the typical 25-mm thickness. Environmental factors include air temperature and humidity, wind speed, solar exposure, and aging or weathering history. Additional factors include manufacturing details, launch processing operations, and number of cryogenic thermal cycles. The study of the cryogenic thermal performance of SOFI under large temperature differentials is the subject of this article. The amount of moisture taken into the foam during the cold soak phase, termed Cryogenic Moisture Uptake, must also be considered. The heat leakage rates through these foams were measured under representative conditions using laboratory standard liquid nitrogen boiloff apparatus. Test articles included baseline, aged, and weathered specimens. Testing was performed over the entire pressure range from high vacuum to ambient pressure. Values for apparent thermal conductivity and heat flux were calculated and compared with prior data. As the prior data of record was obtained for small temperature differentials on non-weathered foams, analysis of the different methods is provided. Recent advancements and applications of SOFI systems on future launch vehicles and spacecraft are also addressed.

J.E. Fesmire; B.E. Coffman; B.J. Meneghelli; K.W. Heckle

2012-01-01T23:59:59.000Z

252

Distribution of arsenic and mercury in lime spray dryer ash  

SciTech Connect (OSTI)

The partitioning of As and Hg in various components of lime spray dryer (LSD) ash samples from a coal-fired boiler was characterized to better understand the form and fate of these elements in flue gas desulfurization byproducts. LSD ash samples, collected from the McCracken Power Plant on the Ohio State University campus, were separated by a 140-mesh (106 {mu}m) sieve into two fractions: a fly-ash-/unburned-carbon-enriched fraction (> 106 {mu}m) and a calcium-enriched fraction (< 106 {mu}m). Unburned carbon and fly ash in the material > 106 {mu}m were subsequently separated by density using a lithium heteropolytungstate solution. The concentrations of As and Hg were significant in all fractions. The level of As was consistently greater in the calcium-enriched fraction, while Hg was evenly distributed in all components of LSD ash. Specific surface area was an important factor controlling the distribution of Hg in the different components of LSD ash, but not for As. Comparing the LSD ash data to samples collected from the economizer suggests that As was effectively captured by fly ash at 600{sup o}C, while Hg was not. Leaching tests demonstrated that As and Hg were more stable in the calcium-enriched fraction than in the fly-ash- or carbon-enriched fractions, potentially because of the greater pH of the leachate and subsequently greater stability of small amounts of calcium solids containing trace elements in these fractions. 37 refs., 8 figs., 2 tabs.

Panuwat Taerakul; Ping Sun; Danold W. Golightly; Harold W. Walker; Linda K. Weavers [Ohio State University, Columbus, OH (United States). Department of Civil and Environmental Engineering and Geodetic Science

2006-08-15T23:59:59.000Z

253

Spray Deposition of High Quality CuInSe2 and CdTe Films: Preprint  

SciTech Connect (OSTI)

A number of different ink and deposition approaches have been used for the deposition of CuInSe2 (CIS), Cu(In,Ga)Se2 (CIGS), and CdTe films. For CIS and CIGS, soluble precursors containing Cu, In, and Ga have been developed and used in two ways to produce CIS films. In the first, In-containing precursor films were sprayed on Mo-coated glass substrates and converted by rapid thermal processing (RTP) to In2Se3. Then a Cu-containing film was sprayed down on top of the In2Se3 and the stacked films were again thermally processed to give CIS. In the second approach, the Cu-, In-, and Ga-containing inks were combined in the proper ratio to produce a mixed Cu-In-Ga ink that was sprayed on substrates and thermally processed to give CIGS films directly. For CdTe deposition, ink consisting of CdTe nanoparticles dispersed in methanol was prepared and used to spray precursor films. Annealing these precursor films in the presence of CdCl2 produced large-grained CdTe films. The films were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). Optimized spray and processing conditions are crucial to obtain dense, crystalline films.

Curtis, C. J.; van Hest, M.; Miedaner, A.; Leisch, J.; Hersh, P.; Nekuda, J.; Ginley, D. S.

2008-05-01T23:59:59.000Z

254

Mercury/Waterfilling for Fixed Wireless OFDM Angel Lozano  

E-Print Network [OSTI]

Mercury/Waterfilling for Fixed Wireless OFDM Systems Angel Lozano Bell Labs (Lucent Technologies- mation is then given by the more general mercury/waterfilling policy. This paper illustrates the usance of mercury/waterfilling on frequency-selective OFDM channels with QAM constellations and it quantifies

Verdú, Sergio

255

obligations. When these products are obtained at fixed prices  

E-Print Network [OSTI]

al. have failed to properly analyze these fixed- price full-requirements load- following products and Andrew Lemon, Power Procurement: What's in Your Mix?, PUB. UTIL. FORTNIGHTLY, Nov. 2006, at 50. 4. Load-following of generation assets in New England has become less concentrated following the use of load-following products

Gross, George

256

Walkable Communities, Inc. March 1999 Fixing the Big  

E-Print Network [OSTI]

-1- © Walkable Communities, Inc. March 1999 Road Diets Fixing the Big Roads By Dan Burden and Peter fund a study and to convert a one-mile section of Electric Avenue in Lewistown, Pennsylvania, from four crash statistics and other data, the team concluded that more uniform flow, reduced conflicts and great

Handy, Susan L.

257

3-D modelling of kerosene-fuelled HVOF thermal spray gun  

Science Journals Connector (OSTI)

Liquid-fuelled high-velocity oxy-fuel (HVOF) thermal spraying systems are capable of generating more momentum output to powder particles in comparison with gas-fuelled systems. The use of low-cost fuel such as kerosene makes this technology particular attractive. High-quality coating requires thermal spraying systems delivering consistent performance as a result of the combustion during HVOF spraying. The combustion of kerosene is very complicated due to the variation of fuel composition and subsequently makes it extremely challenging for process control. This paper describes a 3-D simulation using mathematical models available in a commercial finite volume CFD code. The combustion and discrete particle models within the numerical code are applied to solve the combustion of kerosene and couple the motion of fuel droplets with the gas flow dynamics in a Lagrangian fashion. The effects of liquid fuel droplets on the thermodynamics of the combusting gas flow are examined thoroughly.

S. Kamnis; S. Gu

2006-01-01T23:59:59.000Z

258

ON THE USE OF SPRAY SYSTEMS: AN EXAMPLE OF R&D WORK IN HYDROGEN SAFETY FOR NUCLEAR APPLICATIONS  

E-Print Network [OSTI]

occurred since the Three Mile Island nuclear accident in 1979 through experimental programs1 ON THE USE OF SPRAY SYSTEMS: AN EXAMPLE OF R&D WORK IN HYDROGEN SAFETY FOR NUCLEAR APPLICATIONS, igniters and spray systems have been designed and installed in modern nuclear power plants. Mitigation

Boyer, Edmond

259

Corrosion and wear resistance of tungsten carbide-cobalt and tungsten carbide-cobalt-chromium thermal spray coatings  

SciTech Connect (OSTI)

Tungsten carbide thermal spray coatings provide wear surfaces to new and overhauled components for various industries. Their wear resistance is obtained by incorporating small tungsten carbide particles into a metal matrix. This presentation will show what parameters influence their corrosion resistance in the ASTM B-117 Salt Spray Corrosion Test,

Quets, J.; Alford, J.R.

1999-07-01T23:59:59.000Z

260

Quantitative in-cylinder NO-LIF imaging in a realistic gasoline engine with spray-guided direct injection  

E-Print Network [OSTI]

Quantitative in-cylinder NO-LIF imaging in a realistic gasoline engine with spray-guided direct of engines with gasoline direct injection. Exhaust gas aftertreatment requires storage catalysts fractions in a gasoline engine with spray-guided direct injection using laser-induced fluorescence (LIF

Lee, Tonghun

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

The wave state and sea spray related parameterization of wind stress applicable from low to extreme winds  

E-Print Network [OSTI]

The wave state and sea spray related parameterization of wind stress applicable from low to extreme surface aerodynamic roughness applicable from low to extreme winds is proposed. The corresponding), The wave state and sea spray related parameterization of wind stress applicable from low to extreme winds

Liu, Paul

262

Design and performance of atomizing nozzles for spray calcination of high-level wastes  

SciTech Connect (OSTI)

A key aspect of high-level liquid-waste spray calcination is waste-feed atomization by using air atomizing nozzles. Atomization substantially increases the heat transfer area of the waste solution, which enhances rapid drying. Experience from the spray-calciner operations has demonstrated that nozzle flow conditions that produce 70-..mu.. median-volume-diameter or smaller spray droplets are required for small-scale spray calciners (drying capacity less than 80 L/h). For large-scale calciners (drying capacity greater than 300 L/h), nozzle flow conditions that produce 100-..mu.. median-volume-diameter or smaller spray droplets are required. Mass flow ratios of 0.2 to 0.4, depending on nozzle size, are required for proper operation of internal-mix atomizing nozzles. Both internal-mix and external-mix nozzles have been tested at PNL. Due to the lower airflow requirements and fewer large droplets produced, the internal-mix nozzle has been chosen for primary development in the spray calciner program at PNL. Several nozzle air-cap materials for internal-mix nozzles have been tested for wear resistance. Results show that nozzle air caps of stainless steel and Cer-vit (a machineable glass ceramic) are suceptible to rapid wear by abrasive slurries, whereas air caps of alumina and reaction-bonded silicon nitride show only slow wear. Longer-term testing is necessary to determine more accurately the actual frequency of nozzle replacement. Atomizing nozzle air caps of alumina are subject to fracture from thermal shock, whereas air caps of silicon nitride and Cer-vit are not. Fractured nozzles are held in place by the air-cap retaining ring and continue to atomize satisfactorily. Therefore, fractures caused by thermal shocking do not necessarily result in nozzle failure.

Miller, F.A.; Stout, L.A.

1981-05-01T23:59:59.000Z

263

Water Efficiency  

Energy Savers [EERE]

Wheeler - Water Savers, LLC * fwheeler@watersaversllc.com Topics * Performance contracting analysis * Water industry terms * Federal reduction goals * Water balance * Water...

264

Modeling of fixed bed methanation reactor for syngas production: Operating window and performance characteristics  

Science Journals Connector (OSTI)

Abstract The present work focuses on the development of phenomenological model for the bio-syngas to methane conversion process. One dimensional heterogeneous and pseudo-homogeneous model were simulated for a typical pilot plant scale fixed bed methanator processing 55 mol/h of CO (total molar flow rate of 310 mol/h) with inlet composition of H2/CO = 3, CO2/CO = 1, CH4/CO = 0.5 at 550 K and 1 atm. Performance of the fixed bed reactor at different operating conditions like CO2/CO ratio, H2/CO ratio, effect of H2O in the feed was studied. It was found that for feeds that were not pre-enriched with hydrogen, presence of water and water gas shift activity was found to decrease the catalyst inventory substantially. CO2 in the inlet feed stream would help to decrease the temperature due to dilution effect and more importantly, can be chosen to maximize methane yield per mole of CO converted. Further, the model was simulated to predict the performance characteristics of reactor with a mixture containing two types of catalyst, one of them being specifically added to increase H2/CO ratio in feed through water gas shift reaction. The work also laid the importance of incorporating pore diffusion and external mass transfer locally in the computation of actual catalyst inventory and reactor volume. The work was useful in selection of operating window and assessing the various viable options for an industrial reactor. The model developed will serve in selection of operability window for commercialization of substitute natural gas synthesis (SNG) process.

Naren Rajan Parlikkad; Stéphane Chambrey; Pascal Fongarland; Nouria Fatah; Andrei Khodakov; Sandra Capela; Olivier Guerrini

2013-01-01T23:59:59.000Z

265

Effects of primary breakup modeling on spray and combustion characteristics of compression ignition engines  

SciTech Connect (OSTI)

Injector flow dynamics and primary breakup processes are known to play a pivotal role in determining combustion and emissions in diesel engines. In the present study, we examine the effects of primary breakup modeling on the spray and combustion characteristics under diesel engine conditions. The commonly used KH model, which considers the aerodynamically induced breakup based on the Kelvin-Helmholtz instability, is modified to include the effects of cavitation and turbulence generated inside the injector. The KH model and the new (KH-ACT) model are extensively evaluated by performing 3-D time-dependent simulations with detailed chemistry under diesel engine conditions. Results indicate that the inclusion of cavitation and turbulence enhances primary breakup, leading to smaller droplet sizes, decrease in liquid penetration, and increase in the radial dispersion of spray. Predictions are compared with measurements for non-evaporating and evaporating sprays, as well as with flame measurements. While both the models are able to reproduce the experimentally observed global spray and combustion characteristics, predictions using the KH-ACT model exhibit closer agreement with measurements in terms of liquid penetration, cone angle, spray axial velocity, and liquid mass distribution for non-evaporating sprays. Similarly, the KH-ACT model leads to better agreement with respect to the liquid length and vapor penetration distance for evaporating sprays, and with respect to the flame lift-off location for combusting sprays. The improved agreement is attributed to the ability of the new model to account for the effects of turbulence and cavitation generated inside the injector, which enhance the primary breakup. Results further indicate that the combustion under diesel engine conditions is characterized by a double-flame structure with a rich premixed reaction zone near the flame stabilization region and a non-premixed reaction zone further downstream. This flame structure is consistent with the Dec's model for diesel engine combustion (Dec, 1997), and well captured by a newly developed flame index based on the scalar product of CO and O{sub 2} mass fraction gradients. (author)

Som, S.; Aggarwal, S.K. [Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607 (United States)

2010-06-15T23:59:59.000Z

266

Magnetic shielding properties of plasma sprayed YBa2Cu3O7-x on nickel substrates  

Science Journals Connector (OSTI)

YBa2Cu3O7-x films were grown by a low pressure plasma spraying technique and atmospheric plasma spray on polycrystalline nickel substrate using yttrium-stabilized zirconia as a buffer layer. After post-annealing in oxygen at high temperature, zero resistance is reached above 77 K. YBa2Cu3O7-x films with thicknesses between 120 and 420 ?m were prepared and their critical currents measured. The a.c. magnetic shielding properties were determined in the high frequency region, 100 kHz to 3 MHz. The relations between the screening properties, the critical currents and the microstructure of the thin films are discussed.

D. Castello; J. Fontcuberta; M. Pont; J.S. Muñoz

1992-01-01T23:59:59.000Z

267

14.6 CLOSE-OUT OF FIXED PRICE CONTRACTS Auditors recently have identified three problems with our practices regarding close-out of fixed-price  

E-Print Network [OSTI]

14.6 CLOSE-OUT OF FIXED PRICE CONTRACTS Auditors recently have identified three problems with our practices regarding close-out of fixed-price contracts when 10% or more of the budget remains in the account Principal Investigators to ensure that no more than 5% of the budget remains in a fixed-price contract

268

Buildings Energy Data Book: 8.4 WaterSense  

Buildings Energy Data Book [EERE]

4 WaterSense 4 WaterSense March 2012 8.4.1 WaterSense List of Covered Products and Efficiency Specifications Covered Product Lavatory Faucets (1) Toilets (2) Urinals Shower Heads Irrigation Control Equipment (3) Pre-Rinse Spray Valves (4) Water Softeners - (4) - WaterSense Landscape Irrigation Partners as of February 2012: 2001 (5) Note(s): Source(s): In Progress 1) GPM = gallons per minute. 2) GPF = gallons per flush. 3) Mulitiple criteria for irrigation includes requirements for percentage reduction in irrigation adequacy and irrigation excess, as well as conformance to supplemental capability requirements 4) Final criteria for these categories have not been set. These are criteria levels that WaterSense is considering. 5) WaterSense qualifies individuals as partners via private programs certified by WaterSense.

269

Chain Retraction Potential in a Fixed Entanglement Network  

Science Journals Connector (OSTI)

When a chain, tethered at one end, is immersed in a fixed entanglement network, the mobile tip of the chain encounters an entropic potential barrier that penalizes deep fluctuations needed to bring the tip close to the tethering point. Using the tube model, Doi and Kuzuu [J. Polym. Sci., Polym. Lett. Ed. 18, 775 (1980)] estimated that this potential, which is crucial to describe the rheology of branched polymers in fixed networks and melts, has a quadratic form with a prefactor ?=1.5. Later calculations based on regular lattices indicated that the potential is nonquadratic, and its steepness depends on the lattice coordination number. In this Letter, we analyze the primitive paths obtained using the bond-fluctuation model for chains with up to 12.5 entanglements. Our simulations confirm a quadratic form for the potential with a prefactor close to the Doi-Kuzuu value, ??1.5.

Sachin Shanbhag and Ronald G. Larson

2005-02-23T23:59:59.000Z

270

Fixed points, stable manifolds, weather regimes, and their predictability  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model’s fixed points in phase space. The model dynamics is characterized by the coexistence of multiple “weather regimes.” To investigate the transitions from one regime to another, we focus on the identification of stable manifolds associated with fixed points. We show that these manifolds act as separatrices between regimes. We track each manifold by making use of two local predictability measures arising from the meteorological applications of nonlinear dynamics, namely, “bred vectors” and singular vectors. These results are then verified in the framework of ensemble forecasts issued from “clouds” (ensembles) of initial states. The divergence of the trajectories allows us to establish the connections between zones of low predictability, the geometry of the stable manifolds, and transitions between regimes.

Deremble, Bruno; D'Andrea, Fabio; Ghil, Michael [Univ. of California, Los Angeles, CA (United Staes). Atmospheric and Oceanic Sciences and Institute of Geophysics and Planetary Physics

2009-10-27T23:59:59.000Z

271

Performance characteristics of an induced draft, counterflow, spray cooling tower  

E-Print Network [OSTI]

V Total mass transfer coefi'icient, pounds of water per hour per square Zoot per pound of vapor per pound of dry air Tower characteristic Number of nozzles used XX SURVEY OF LXTERATUHE The currently accepted theory of heat and mass exchange between... a stream of' water droplets and a stream of unsatu rated air was first proposed by Robinson (8)o in 1MS, and, ln 19S5$ by Waker g Lewi s y and 5!cAdams ( 1 ) . Al so in 1985, -gerlrel (5), using the same basic equations somewhat moxe rigorously...

Jones, Charles Edward

2012-06-07T23:59:59.000Z

272

Modeling for Anaerobic Fixed-Bed Biofilm Reactors  

SciTech Connect (OSTI)

The specific objectives of this research were: 1. to develop an equilibrium model for chemical aspects of anaerobic reactors; 2. to modify the equilibrium model for non-equilibrium conditions; 3. to incorporate the existing biofilm models into the models above to study the biological and chemical behavior of the fixed-film anaerobic reactors; 4. to experimentally verify the validity of these models; 5. to investigate the biomass-holding ability of difference packing materials for establishing reactor design criteria.

Liu, B. Y. M.; Pfeffer, J. T.

1989-06-01T23:59:59.000Z

273

MHK Technologies/Wave Treader fixed | Open Energy Information  

Open Energy Info (EERE)

MHK Technologies/Wave Treader fixed MHK Technologies/Wave Treader fixed < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Treader fixed.jpg Technology Profile Primary Organization Green Ocean Energy Ltd Project(s) where this technology is utilized *MHK Projects/Development of Ocean Treader Technology Resource Click here Wave Technology Type Click here Attenuator Technology Readiness Level Click here TRL 4: Proof of Concept Technology Description The Wave Treader concept utilises the arms and sponsons from Ocean Treader and instead of reacting against a floating Spar Buoy, will react through an Interface Structure onto the Foundation of an Offshore Wind Turbine. Between the Arms and the Interface Structure hydraulic cylinders are mounted and as the wave passes the machine first the forward Sponson will lift and fall and then the aft Sponson will lift and fall each stroking their hydraulic cylinder in turn. This pressurises hydraulic fluid which is then smoothed by hydraulic accumulators before driving a hydraulic motor which in turn drives an electricity generator. The electricity is then exported through the cable shared with the Wind Turbine.

274

The fixed irreducible bridge ensemble for self-avoiding walks  

E-Print Network [OSTI]

We define a new ensemble for self-avoiding walks in the upper half-plane, the fixed irredicible bridge ensemble, by considering self-avoiding walks in the upper half-plane up to their $n$-th bridge height, $Y_n$, and scaling the walk by $1/Y_n$ to obtain a curve in the unit strip, and then taking $n\\to\\infty$. We then conjecture a relationship between this ensemble to $\\SLE$ in the unit strip from $0$ to a fixed point along the upper boundary of the strip, integrated over the conjectured exit density of self-avoiding walk spanning a strip in the scaling limit. We conjecture that there exists a positive constant $\\sigma$ such that $n^{-\\sigma}Y_n$ converges in distribution to that of a stable random variable as $n\\to\\infty$. Then the conjectured relationship between the fixed irreducible bridge scaling limit and $\\SLE$ can be described as follows: If one takes a SAW considered up to $Y_n$ and scales by $1/Y_n$ and then weights the walk by $Y_n$ to an appropriate power, then in the limit $n\\to\\infty$, one should obtain a curve from the scaling limit of the self-avoiding walk spanning the unit strip. In addition to a heuristic derivation, we provide numerical evidence to support the conjecture and give estimates for the boundary scaling exponent.

Michael James Gilbert

2014-10-17T23:59:59.000Z

275

On the development of a spray model based on drop-size moments  

Science Journals Connector (OSTI)

...experimental results given are penetration rates, and the SMR averaged...although less good than the penetration results. Again, the...rst millisecond. The rate of increase of spray...20 30 40 time (ms) penetration(mm) case R1 predicted...

2003-01-01T23:59:59.000Z

276

Large-Eddy Simulation of Evaporating Spray in a Coaxial Combustor  

E-Print Network [OSTI]

of engineering applications; e.g. internal combustion engines, liquid and solid propellant rocket motors, gas-turbine representative of gas-turbine combustors. Key words: Sprays, LES, unstructured grids, particle-laden flows complex. In gas turbine combustors, for example, the liquid fuel jet undergoes primary and secondary

Mahesh, Krishnan

277

JET BREAKUP and SPRAY FORMATION in a DIESEL ENGINE James Glimm  

E-Print Network [OSTI]

JET BREAKUP and SPRAY FORMATION in a DIESEL ENGINE James Glimm Department of Applied Mathematics of a fuel eÃ?cient, nonpollut- ing diesel engine. We report preliminary progress on the numerical simulation Introduction The design of a fuel eÃ?cient, nonpolluting diesel engine is the subject of intensive international

New York at Stoney Brook, State University of

278

hal-00157269,version1-26Jun2007 Numerical simulation of spray coalescence in an Eulerian  

E-Print Network [OSTI]

. #12;1 Introduction In many industrial combustion applications such as Diesel engines, fuel is stocked and Biological Engineering, 2114 Sweeney Hall, Iowa State University, Ames, IA 50011-2230, U.S.A. - rofox. The fundamental mathematical description is the Williams spray equation governing the joint number density

Paris-Sud XI, Université de

279

Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines  

E-Print Network [OSTI]

Investigation of two-fluid methods for Large Eddy Simulation of spray combustion in Gas Turbines the EL method well suited for gas turbine computations, but RANS with the EE approach may also be found and coupled with the LES solver of the gas phase. The equations used for each phase and the coupling terms

280

High-Velocity Oxy-Fuel (HVOF) Suspension Spraying of Mullite Coatings  

Science Journals Connector (OSTI)

Mullite coatings (3Al2O3 · 2SiO2) were deposited by suspension thermal spraying of micron-sized (D50...= 1.8 ?m) feedstock powders, using a high-velocity oxy-fuel gun (HVOF) operated on propylene (DJ-2700) and .....

J. Oberste Berghaus; B.R. Marple

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Preparation of BaTiO3 nanoparticles by combustion spray pyrolysis Sangjin Leea  

E-Print Network [OSTI]

], hydrothermal [6], and spray pyrolysis [7­9] have been developed to prepare stoichiometric, ultra- fine BaTiO3 process. Hydrothermal BaTiO3 powders [6] are usually a paraelectric cubic phase, which needs additional freedom from hydrocarbon-based chem- icals, and thus avoiding carbon-contamination problems. As a result

Messing, Gary L.

282

CaO-based sorbents for CO2 capture prepared by ultrasonic spray pyrolysis  

E-Print Network [OSTI]

of additives in the CaO matrix and the relatively high surface area materials obtained via USP explain are currently under investigation for CO2 capture, both for post- combustion (e.g., silica supported amines,2 of metal oxides, even on an industrial scale.18,19 We report here the rst use of ultrasonic spray pyrolysis

Suslick, Kenneth S.

283

Fabrication and Wear Behavior of Nanostructured Plasma-Sprayed 6061Al-SiCp Composite Coating  

Science Journals Connector (OSTI)

6061Al powder with 15 wt.% SiC particulate (SiCp...) reinforcement was mechanically alloyed (MA) in a high-energy attrition mill. The MA powder was then plasma sprayed onto weathering steel (Cor-Ten A242) substra...

Satish Tailor; R. M. Mohanty; V. K. Sharma…

2014-10-01T23:59:59.000Z

284

Ultrafast and quantitative X-tomography and simulation of hollow-cone gasoline direct-injection sprays.  

SciTech Connect (OSTI)

Gasoline direct injection (GDI) has the potential to greatly improve internal combustion engine performance through precise control of the injection rate, timing, and combustion of the fuel. A thorough characterization of the hydrodynamics of fuel injection has to come from a precise, quantitative analysis of the sprays, especially in the near-nozzle region. A lack of knowledge of the fuel-spray dynamics has severely limited computational modeling of the sprays and design of improved injection systems. Previously, the structure and dynamics of highly transient fuel sprays have never been visualized or reconstructed in three dimensions (3D) due to numerous technical difficulties. By using an ultrafast x-ray detector and intense monochromatic x-ray beams from synchrotron radiation, the fine structures and dynamics of 1-ms GDI fuel sprays from an outwardly opening nozzle were elucidated by a newly developed, ultrafast, microsecond computed microtomography (CT) technique. In a time-resolved manner, many detailed features associated with the transient fuel flows are readily observable in the quantitatively reconstructed 3D fuel spray density distribution as a result of the quantitative CT technique. More importantly, a computational fluid dynamics (CFD) simulation based on the Taylor analogy breakup (TAB) model has also been performed using the boundary and initial conditions obtained from the experiment data. The experimental and numerical results are in good agreement quantitatively. These results not only reveal the characteristics of the GDI fuel sprays with unprecedented detail, but will also facilitate realistic computational fluid dynamic simulations in highly transient, multiphase systems.

Liu, X.; Im, K-S; Wang, Y.; Wang, J.; Tate, M.W.; Ercan, A.; Schuette, D.R.; Gruner, S.M. (X-Ray Science Division); (Cornell Univ.)

2007-01-01T23:59:59.000Z

285

Laser fusing of HVOF thermal sprayed alloy 625 on nickel-aluminum bronze  

SciTech Connect (OSTI)

A preliminary study has been conducted to determine the feasibility of laser fusing alloy 625 onto nickel-aluminum-bronze base metal. Laser fusing was performed by melting a pre-coated surface of alloy 625 that had been applied by the high velocity oxyfuel (HVOF) thermal spray process. The laser fusing was successful in producing a metallurigical bond between alloy 625 and the substrate. Minor modification to the heat-affected zone of the base metal was observed by microhardness measurements, and defect-free interfaces were produced between alloy 625 and nickel-aluminum-bronze by the process. The laser is a high energy density source that can be used for precise thermal processing of materials including surface modification. Laser fusing is the full or partial melting of a coating material that has been previously applied in some fashion to the substrate. Thermal spray coating of nickel-aluminum-bronze material with alloy 625 was conducted at the David Taylor Research Center. Nickel-aluminum-bronze specimens 2 x 3-in. by 1/2-in. thick were coated with alloy 25 utilizing the HVOF equipment. Coating thicknesses of approximately 0.014-in. (0.3 mm) were produced for subsequent laser fusing experiments. A preliminary study has been conducted to determine the feasibility of laser fusing a HVOF thermal sprayed alloy 625 coating onto nickel-aluminum-bronze base metal. Conclusions of this investigation were as follows: (1) Laser fusing was successful in producing a metallurgical bond between HVOF thermal sprayed alloy 625 and the nickel-aluminum-bronze. (2) Only minor microstructural modification to the heat-affected zone of the base metal ws observed by microhardness measurements. (3) Defect-free interfaces were produced between thermal sprayed alloy 625 and nickel-aluminum-bronze by laser fusing.

Brenna, R.T.; Pugh, J.L.; Denney, P.E. [and others

1994-12-31T23:59:59.000Z

286

Flame structure of wall-impinging diesel fuel sprays injected by group-hole nozzles  

SciTech Connect (OSTI)

This paper describes an investigation of the flame structure of wall-impinging diesel sprays injected by group-hole nozzles in a constant-volume combustion vessel at experimental conditions typical of a diesel engine. The particular emphasis was on the effect of the included angle between two orifices (0-15 deg. in current study) on the flame structure and combustion characteristics under various simulated engine load conditions. The laser absorption scattering (LAS) technique was applied to analyze the spray and mixture properties. Direct flame imaging and OH chemiluminescence imaging were utilized to quantify the ignition delay, flame geometrical parameters, and OH chemiluminescence intensity. The images show that the asymmetric flame structure emerges in wall-impinging group-hole nozzle sprays as larger included angle and higher engine load conditions are applied, which is consistent with the spray shape observed by LAS. Compared to the base nozzle, group-hole nozzles with large included angles yield higher overall OH chemiluminescence intensity, wider flame area, and greater proportion of high OH intensity, implying the better fuel/air mixing and improved combustion characteristics. The advantages of group-hole nozzle are more pronounced under high load conditions. Based on the results, the feasibility of group-hole nozzle for practical direct injection diesel engines is also discussed. It is concluded that the asymmetric flame structure of a group-hole nozzle spray is favorable to reduce soot formation over wide engine loads. However, the hole configuration of the group-hole nozzle should be carefully considered so as to achieve proper air utilization in the combustion chamber. Stoichiometric diesel combustion is another promising application of group-hole nozzle. (author)

Gao, Jian; Moon, Seoksu; Nishida, Keiya; Matsumoto, Yuhei [Department of Mechanical System Engineering, University of Hiroshima, Higashi-Hiroshima, 739-8527 (Japan); Zhang, Yuyin [Department of Mechanical Engineering, Tokyo Denki University, Tokyo, 101-8457 (Japan)

2009-06-15T23:59:59.000Z

287

Spray carrier stability, plant mobility, and runoff potential of trifloxysulfuron  

E-Print Network [OSTI]

selectivity, weed control efficacy, and a favorable environmental profile (Moberg and Cross 1990). Degradation products of trifloxysulfuron are not herbicidally active. The water solubility of this herbicide is influenced by pH as well as the chemical... herbicides have the potential to chemically degrade in aqueous solution. The most common degradation pathways for SUs include chemical hydrolysis and microbial degradation (Sarmah et al. 2000). SUs have many functional groups susceptible to different...

Matocha, Mark Andrew

2009-06-02T23:59:59.000Z

288

Improving Design Methods for Fixed-Foundation Offshore Wind Energy...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

System, and the Simulated Waves Nearshore Shallow Water Waves model to analyze the spatial and temporal variability of breaking waves. The model output will be used to...

289

Improving Value in Medicare with an SGR Fix  

Science Journals Connector (OSTI)

...something that the relative-value scale does not do. The use of a relative-value scale with fees adjusted according to the SGR is inconsistent with the renewed interest in value creation in health care. A fee schedule that reimburses physicians on the basis of billing for approximately 8000 discrete service... Congressional attention is being directed toward developing an alternative Medicare reimbursement system that rewards physicians who improve the quality and efficiency of care, rather than trying to fix the sustainable growth rate formula.

Wilensky G.R.

2014-01-02T23:59:59.000Z

290

Remarks on a fixed point theorem of Caristi  

E-Print Network [OSTI]

1977) David Lee Egle, B . S . , Pan American University Chairman of Advisory Committee: L. F. Guseman, Jr. Let (X, d) be a complete metric space and f a selfmap of X. It is shown that various known theorems on the existence of fixed and periodic..., &) is a partially ordered set. Let x c X. Define a set M by A = lA : A C X, x c A, and A is totally ordered&. Order M by set inclusion; that is, A Q B iff A C B. Let ( g, 6 ) be a chain in Af, and let B= UA Ac (g, g) Clearly, x c B and 8 L: X. Let a...

Egle, David Lee

2012-06-07T23:59:59.000Z

291

Surface tension in bilayer membranes with fixed projected area  

E-Print Network [OSTI]

We study the elastic response of bilayer membranes with fixed projected area to both stretching and shape deformations. A surface tension is associated to each of these deformations. By using model amphiphilic membranes and computer simulations, we are able to observe both the types of deformation, and thus, both the surface tensions, related to each type of deformation, are measured for the same system. These surface tensions are found to assume different values in the same bilayer membrane: in particular they vanish for different values of the projected area. We introduce a simple theory which relates the two quantities and successfully apply it to the data obtained with computer simulations.

Alberto Imparato

2006-04-05T23:59:59.000Z

292

Hadron Production at Fixed Target Energies and Extensive Air Showers  

E-Print Network [OSTI]

NA61/SHINE is a fixed-target experiment to study hadron production in hadron-nucleus and nucleus-nucleus collisions at the CERN SPS. Due to the very good acceptance and particle identification in forward direction, NA61/SHINE is well suited for measuring particle production to improve the reliability of air shower simulations. Data with proton and pion beams have been taken in 2007 and 2009. First analysis results for the pion yield in proton-carbon interactions at 31 GeV will be shown and compared to predictions from models used in air shower simulations.

M. Unger; for the NA61/SHINE Collaboration

2010-12-12T23:59:59.000Z

293

Policy Flash 2015-02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS...  

Office of Environmental Management (EM)

5-02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS Policy Flash 2015-02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS Questions concerning this policy flash should be directed to Michael...

294

Utilisation de theor`emes de point fixe. Par Nicolas Lanchier 1  

E-Print Network [OSTI]

Utilisation de th´eor`emes de point fixe. Par Nicolas Lanchier 1 1 Th´eor`emes de point fixe. D´efinition 1.1 -- On appelle point fixe de f : X - X tout ´el´ement X tel que f() = . Th´eor`eme 1.2 (point point fixe. [4], Sect. 1.2 Th´eor`eme 1.3 -- Soient X un espace complet et f : X - X une application. S

Lanchier, Nicolas

295

Scalable Manufacture of Built-to-Order Nanomedicine: Spray-Assisted Layer-by-Layer Functionalization of PRINT Nanoparticles  

E-Print Network [OSTI]

Scalable methods, PRINT particle fabrication, and spray-assisted Layer-by-Layer deposition are combined to generate uniform and functional nanotechnologies with precise control over composition, size, shape, and surface ...

Herlihy, Kevin P.

296

Chemical-looping combustion of syngas by means of spray-dried NiO oxygen carrier  

Science Journals Connector (OSTI)

Chemical-looping combustion (CLC) of syngas has a potential...2 and CO) appeared to be approximately the sum of the reaction rate of each fuel gas. The experimental results indicated that the spray-dried NiO oxyg...

Jeom-In Baek; Chong Kul Ryu; Tae Hyoung Eom…

2011-11-01T23:59:59.000Z

297

Wear Behavior of Plasma-Sprayed Carbon Nanotube-Reinforced Aluminum Oxide Coating in Marine and High-Temperature Environments  

Science Journals Connector (OSTI)

Plasma-sprayed aluminum oxide (Al2O3) coatings offer excellent wear resistance, corrosion resistance, heat, and thermal...1-6...). These coatings have to operate under severe conditions, such as high load, high s...

Anup Kumar Keshri; Arvind Agarwal

2011-12-01T23:59:59.000Z

298

Implementation of a Low Cost Robot Controller PC-ROBOCONT on Hydraulic Robot for Spray Painting G-201  

Science Journals Connector (OSTI)

The paper describes the implementation of the low cost robot controller PC-ROBOCONT on hydraulic spray painting robot G-201. PC-ROBOCONT is a low cost robot controller based on popular PC 386. For use with the sp...

B. Nemec; L. Zlajpah; S. Mrak

1994-01-01T23:59:59.000Z

299

Numerical modeling of in-flight characteristics of inconel 625 particles during high-velocity oxy-fuel thermal spraying  

Science Journals Connector (OSTI)

A computational fluid dynamics (CFD) model is developed to predict particle dynamic behavior in a high-velocity oxyfuel (HVOF) thermal spray gun in which premixed oxygen and propylene are ... 20 to 40 µm. At a pa...

S. Gu; D. G. McCartney; C. N. Eastwick; K. Simmons

2004-01-01T23:59:59.000Z

300

Nanoparticle suspension preparation using the arc spray nanoparticle synthesis system combined with ultrasonic vibration and rotating electrode  

Science Journals Connector (OSTI)

This study aims to investigate the use of a new nanoparticle preparation method, i.e., the arc spray nanoparticle synthesis system (ASNSS) combined with ultrasonic...2 nanoparticle suspension. For the proposed ne...

H. Chang; T.T. Tsung; Y.C. Yang; L.C. Chen…

2005-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Performance analysis of Azimuth Tracking Fixed Mirror Solar Concentrator  

Science Journals Connector (OSTI)

Abstract The fixed mirror solar collector (FMSC) fixes reflector and mobiles receiver to collect solar energy. However, this type of concentrator has a low efficiency and short operating duration in practical applications. In this paper, we propose to install the FMSC on an azimuth tracking device (ATFMSC) and the reflectors are arranged by intermission to avoid the shading of neighbor reflector for incidence angle of less than 10° to improve its optical performance. Through the integration of the reflected solar radiation distribution function over any reflection point, and then the whole collector aperture, we develop the analytical expressions of various system efficiencies to numerically simulate the performance of ATFMSC with evacuated tube receiver in different design parameters. It is validated by the ray tracing results. The result shows that the mean annual net heat efficiency of the whole system would be up to 61% with the operating temperature of 400 °C, which is higher than parabolic trough collector and traditional FMSC. This is because the longitudinal incidence angle of ATFMSC always remains zero by tracking the sun azimuth, so the end loss of the concentrator can be avoided and enables it to operate with high efficiency continually.

Longlong Li; Huairui Li; Qian Xu; Weidong Huang

2015-01-01T23:59:59.000Z

302

Fixed Point Analysis of the Saturation Throughput of IEEE 802.11 WLANs with Capture  

E-Print Network [OSTI]

1 Fixed Point Analysis of the Saturation Throughput of IEEE 802.11 WLANs with Capture Venkatesh capture, fading or frame error), using a fixed point framework developed in [7]. Here, we extend the work then obtain the fixed point equations for the infrastructure model. We show that these equations accurately

Kumar, Anurag

303

Fixed Point Analysis of Single Cell IEEE 802.11e WLANs: Uniqueness and Multistability  

E-Print Network [OSTI]

1 Fixed Point Analysis of Single Cell IEEE 802.11e WLANs: Uniqueness and Multistability Venkatesh Ramaiyan1 Anurag Kumar1 and Eitan Altman2 Abstract-- We consider the vector fixed point equations arisingFrame Space (AIFS) values. We consider balanced and unbalanced solutions of the fixed point equations arising

Kumar, Anurag

304

New Insights from a Fixed Point Analysis of Single Cell IEEE 802.11 WLANs  

E-Print Network [OSTI]

New Insights from a Fixed Point Analysis of Single Cell IEEE 802.11 WLANs Anurag Kumar1, Eitan Altman2, Daniele Miorandi2 and Munish Goyal1 Abstract-- We study a fixed point formalisation of the well. In this more general framework, the fixed point solution and performance measures resulting from it are studied

Kumar, Anurag

305

New Insights from a Fixed Point Analysis of Single Cell IEEE 802.11 WLANs  

E-Print Network [OSTI]

1 New Insights from a Fixed Point Analysis of Single Cell IEEE 802.11 WLANs Anurag Kumar1, Eitan Altman2, Daniele Miorandi3 and Munish Goyal1 Abstract-- We study a fixed point formalisation of the well of the analysis. In this more general framework, the fixed point solution and performance measures resulting from

Kumar, Anurag

306

An evaluation of high viscosity, crowded phase emulsions as herbicide carriers when applied through the bifluid spray system  

E-Print Network [OSTI]

AN EVALUATION OF HIGH VISCOSITY, CROWDED PHASE EMULSIONS AS HERBICIDE CARRIERS WHEN APPLIED THROUGH THE BIFLUID SPRAY SYSTEM A Thesis By PHIL J, PHILLIPS Submitted to the Graduate School of the Agricultural and Mechanical College of Texas... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1963 Range Management AN EVALUATION OF HIGH VISCOSITY, CROWDED PHASE EMULSIONS AS HERBICIDE CARRIERS WHEN APPLIED THROUGH THE BIFLUID SPRAY SYSTEM A Thesis By PHIL J...

Phillips, Phil J

2012-06-07T23:59:59.000Z

307

Coagulation/Flocculation Treatments for Flue-Gas-Derived Water from Oxyfuel Power Production with CO2 Capture  

Science Journals Connector (OSTI)

Coagulation/Flocculation Treatments for Flue-Gas-Derived Water from Oxyfuel Power Production with CO2 Capture ... The buffered solution is then sent back to the top of the tower, where it is sprayed into the upflowing oxyfuel gas stream, condensing and cleaning the ash-laden gas. ...

Sivaram Harendra; Danylo Oryshchyn; Thomas Ochs; Stephen Gerdemann; John Clark; Cathy Summers

2011-08-02T23:59:59.000Z

308

Terascale High-Fidelity Simulations of Turbulent Combustion with Detailed Chemistry: Spray Simulations  

SciTech Connect (OSTI)

The Terascale High-Fidelity Simulations of Turbulent Combustion (TSTC) project is a multi-university collaborative effort to develop a high-fidelity turbulent reacting flow simulation capability utilizing terascale, massively parallel computer technology. The main paradigm of the approach is direct numerical simulation (DNS) featuring the highest temporal and spatial accuracy, allowing quantitative observations of the fine-scale physics found in turbulent reacting flows as well as providing a useful tool for development of sub-models needed in device-level simulations. Under this component of the TSTC program the simulation code named S3D, developed and shared with coworkers at Sandia National Laboratories, has been enhanced with new numerical algorithms and physical models to provide predictive capabilities for turbulent liquid fuel spray dynamics. Major accomplishments include improved fundamental understanding of mixing and auto-ignition in multi-phase turbulent reactant mixtures and turbulent fuel injection spray jets.

Rutland, Christopher J.

2009-04-26T23:59:59.000Z

309

Effect of sintering on thermally sprayed carbon nanotube reinforced aluminum nanocomposite  

Science Journals Connector (OSTI)

Reconsolidation of thermally spray formed (plasma and high velocity oxyfuel spraying) hypereutectic Al–Si nanocomposites with multiwalled carbon nanotube (MWCNT) reinforcement was carried out by inert atmosphere sintering for prolonged time periods. The sintering treatment resulted in the removal of porosity and residual stress, and increase in size and volume fraction of primary Si particles in the Al–Si matrix. The morphology of multiwalled carbon nanotubes in sintered nanocomposites remained unchanged after sintering. The interfacial ultrathin product layer of silicon carbide between MWCNT reinforcement and Al–Si matrix was unaltered. Microhardness and elastic modulus of the sintered nanocomposites were influenced by combined effect of multiple factors, i.e. reduction in porosity, residual stress removal and MWCNT distribution. Overall improvement of microhardness and elastic modulus of the sintered nanocomposites was observed. The experimentally measured elastic modulus values were compared with theoretically estimated values using micromechanics models.

T. Laha; A. Agarwal

2008-01-01T23:59:59.000Z

310

Factors affecting the microstructural stability and durability of thermal barrier coatings fabricated by air plasma spraying  

SciTech Connect (OSTI)

The high-temperature behavior of high-purity, low-density (HP-LD) air plasma sprayed (APS) thermal barrier coatings (TBCs) with NiCoCrAlY bond coats deposited by argon-shrouded plasma spraying is described. The high purity yttria-stabilized zirconia resulted in top coats which are highly resistant to sintering and transformation from the metastable tetragonal phase to the equilibrium mixture of monoclinic and cubic phases. The thermal conductivity of the as-processed TBC is low but increases during high temperature exposure even before densification occurs. The porous topcoat microstructure also resulted in good spallation resistance during thermal cycling. The actual failure mechanisms of the APS coatings were found to depend on topcoat thickness, topcoat density, and the thermal cycle frequency. The failure mechanisms are described and the durability of the HP-LD coatings is compared with that of state-of-the-art electron beam physical vapor deposition TBCs.

Helminiak, M. A. [National Energy Technology Laboratory (NETL) and Univ. of Pittsburgh, PA (United States); Yanar, N. M. [National Energy Technology Laboratory (NETL) and Univ. of Pittsburgh, PA (United States); Pettit, F. S. [National Energy Technology Laboratory (NETL) and Univ. of Pittsburgh, PA (United States); Taylor, T. A. [Praxair Surface Technologies, Inc., Indianapolis, IN (United States); Meier, G. H. [National Energy Technology Laboratory (NETL) and Univ. of Pittsburgh, PA (United States)

2012-10-01T23:59:59.000Z

311

Nested, fixed-depth fluidic sampler supplementary testing - AEAT doc 2926-2-002  

SciTech Connect (OSTI)

This report summarizes the results of cold testing, completed by AEAT, as part of the proof-of-principle testing for a proposed nested, fixed-depth fluidic sampling system. This sampling system will provide waste samples from the PHMC feed tank to support the privatization contract with BNFL. Proof-of-principle tests were completed with 2 wt% and 10 wt% sand/water and 25 wt% kaolin clay/water simulants with a test setup that spanned the 24 ft to 57 ft height required in the feed tank. The tests demonstrated that the system could pump and sample waste materials with low and with high solids content. In addition, the tests demonstrated a need for some design upgrades to the sampling system, as there was material loss when the sample bottle was removed from the sampling needle. These were complementary tests, completed as part of an EM-50 Tank Focus Area (TFA) to develop a sampling system for validating LAW and HLW waste batches for the Privatization Contract.

REICH, F.R.

1999-03-11T23:59:59.000Z

312

Nuclear criticality safety evaluation of Spray Booth Operations in X-705, Portsmouth Gaseous Diffusion Plant  

SciTech Connect (OSTI)

This report evaluates nuclear criticality safety for Spray Booth Operations in the Decontamination and Recovery Facility, X-705, at the Portsmouth Gaseous Diffusion Plant. A general description of current procedures and related hardware/equipment is presented. Control parameters relevant to nuclear criticality safety are explained, and a consolidated listing of administrative controls and safety systems is developed. Based on compliance with DOE Orders and MMES practices, the overall operation is evaluated, and recommendations for enhanced safety are suggested.

Sheaffer, M.K.; Keeton, S.C.

1993-09-20T23:59:59.000Z

313

SF6432-FP (02-01-12) Firm Fixed Price  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2/01/12 2/01/12 Page 1 of 21 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-FP (02/01/12) Section II STANDARD TERMS AND CONDITIONS FOR FIRM-FIXED PRICE CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) APPLICABLE LAW ASSIGNMENT BANKRUPTCY DEFINITIONS DISPUTES EXCESS FREIGHT CHARGES EXCUSABLE DELAYS EXPORT CONTROL EXTRAS AND VARIATION IN QUANTITY GOVERNMENT PROPERTY MATERIAL AND EQUIPMENT MANUFACTURING AND TESTING STANDARDS

314

Breakout Items Action Items Fixed Price Contracting Topic Group Summaries  

Broader source: Energy.gov (indexed) [DOE]

Albuquerque Meeting - July 1997 Albuquerque Meeting - July 1997 Breakout Items Action Items Fixed Price Contracting Topic Group Summaries TOPIC GROUP SUMMARIES Routing * Group reviewed and approved fourth draft of working paper "Routing Issues Related to U.S. Department of Energy Radioactive Materials Transportation: Discussion and Analysis" * Group submitted working paper and draft list of "Stakeholder Recommendations" to TEC/WG and DOE Group reached consensus on three major routing-related issues: * DOE should develop standardized, cooperative approach to route selection * DOE needs to involve all stakeholders * DOE should submit final version of Group's working paper to other federal entities Future topics for consideration: * routing issues relevant to tribal entities and local jurisdictions

315

Grate assembly for fixed-bed coal gasifier  

DOE Patents [OSTI]

A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

Notestein, John E. (Morgantown, WV)

1993-01-01T23:59:59.000Z

316

A fixed-parameter algorithm for the vertex cover problem  

Science Journals Connector (OSTI)

Abstract A subset F of vertices of a graph G is called a vertex cover P t set if every path of order t in G contains at least one vertex from F. Denote by ? t ( G ) the minimum cardinality of a vertex cover P t set in G. The vertex cover P t ( VCP t ) problem is to find a minimum vertex cover P t set. The VCP t problem is NP-hard for any integer t ? 2 . In this paper, we restrict our attention to the VCP 3 problem and present a fixed-parameter algorithm with runtime O ( 2 k k 3.376 + n 4 m ) for the VCP 3 problem. Here, n denotes the number of vertices, m denotes the number of the edges, k denotes the size of the vertex cover P 3 set searched for.

Jianhua Tu

2014-01-01T23:59:59.000Z

317

Determining average bed temperature of nonisothermal fixed-bed hydrotreater  

Science Journals Connector (OSTI)

Employing three catalysts in three parallel pilot-scale fixed-bed reactors, hydrotreating experiments were performed in both isothermal and ascending temperature modes to investigate kinetics and to determine a representative bed temperature. Assuming 1.5th-order for hydrodesulfurization (HDS) and 1st-order for both hydrodenitrogenation (HDN) and mild hydrocracking (MHC), kinetic parameters were obtained from the isothermal mode operation. With the activation energies from isothermal operations, equivalent isothermal temperatures (EITs) in the ascending mode operations were established for specific HDS, HDN and MHC. Employing 19 thermocouple readouts in the catalyst beds and applying an Arrhenius-type rate equation containing the same activation energy, the representative bed temperature was determined. The temperature so determined is called kinetic EIT. The kinetic EIT was found to be the best to represent the nonisothermal bed temperature. The kinetic EIT has been applied to monitoring the catalyst activity in commercial hydrotreating units.

Sok Yui; John Adjaye

2004-01-01T23:59:59.000Z

318

Gravity Duals of Lifshitz-Like Fixed Points  

SciTech Connect (OSTI)

We find candidate macroscopic gravity duals for scale-invariant but non-Lorentz invariant fixed points, which do not have particle number as a conserved quantity. We compute two-point correlation functions which exhibit novel behavior relative to their AdS counterparts, and find holographic renormalization group flows to conformal field theories. Our theories are characterized by a dynamical critical exponent z, which governs the anisotropy between spatial and temporal scaling t {yields} {lambda}{sup z}t, x {yields} {lambda}x; we focus on the case with z = 2. Such theories describe multicritical points in certain magnetic materials and liquid crystals, and have been shown to arise at quantum critical points in toy models of the cuprate superconductors. This work can be considered a small step towards making useful dual descriptions of such critical points.

Kachru, Shamit; /Stanford U., Phys. Dept. /SLAC; Liu, Xiao; /Perimeter Inst. Theor. Phys.; Mulligan, Michael; /Stanford U., Phys. Dept. /SLAC

2008-11-05T23:59:59.000Z

319

Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 1 (FY 96), July 1, 1995--September 30, 1995  

SciTech Connect (OSTI)

Preliminary experiment has been made for cross injecting water sprays into a convective air stream to test the air-blast atomization system which has been constructed for CWS atomization in the future. A laser diffraction particle analyzing technique (the Malvern system) nonintrusively measured the drop size SMDs for various injection parameters including the convective air flow rate, flow rate of the injected liquid (distilled water), orifice diameter, and measurement locations along the two-dimensional spray plane. Buckingham-PI analysis finds the correlation of dimensionless parameters. A correlation of drop Sauter mean diameter (SMD) normalized to the orifice diameter is obtained from all the experimental data for the case of distilled water sprays.

Kihm, K.D.

1996-02-01T23:59:59.000Z

320

Enhanced rate of gas hydrate formation in a fixed bed column filled with sand compared to a stirred vessel  

Science Journals Connector (OSTI)

The performance of two gas/liquid contact modes was evaluated in relation to the rate of gas hydrate formation. Hydrate formation experiments were conducted for several gas mixtures relevant to natural gas hydrate formation in the earth (CH4, CH4/C3H8, CH4/C2H6 and CH4/C2H6/C3H8) and two CO2 capture and storage (CO2, CO2/H2/C3H8). One set of experiments was conducted in a bed of silica sand, saturated with water (fixed fed column) while the other experiment was conducted in a stirred vessel for each gas/gas mixture. Both sets of experiments were conducted at a constant temperature. The rate of hydrate formation is customarily correlated with the rate of gas consumption. The results show that the rate of hydrate formation in the fixed bed column is significantly greater and thereby resulted in a higher percent of water conversion to hydrate in lesser reaction time for all the systems studied.

Praveen Linga; Nagu Daraboina; John A. Ripmeester; Peter Englezos

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Solar Water Heaters and the Economy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Water Heaters and the Economy Water Heaters and the Economy Solar Water Heaters and the Economy July 11, 2012 - 11:59am Addthis Ernie Tucker Editor, National Renewable Energy Laboratory These are the days of hot sun and mortgage refinance frenzy. Somehow, they've both combined in my mind to make me ponder the economics of a solar water heater. Because the sun's been beating down on our garden hose, the initial flush of water can be very hot. The warm spray reminded me of the times on camping trips when we'd bring along a portable solar shower -- essentially a black plastic bag with a tube and shower nozzle -- for bathing. While not an endless supply (perhaps 10 gallons), it was a very enjoyable luxury. Of course, it assumes that there's plenty of sunshine, but if so -- voila -- a warm and sudsy campsite clean-up is possible.

322

Solar Water Heaters and the Economy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Solar Water Heaters and the Economy Solar Water Heaters and the Economy Solar Water Heaters and the Economy July 11, 2012 - 11:59am Addthis Ernie Tucker Editor, National Renewable Energy Laboratory These are the days of hot sun and mortgage refinance frenzy. Somehow, they've both combined in my mind to make me ponder the economics of a solar water heater. Because the sun's been beating down on our garden hose, the initial flush of water can be very hot. The warm spray reminded me of the times on camping trips when we'd bring along a portable solar shower -- essentially a black plastic bag with a tube and shower nozzle -- for bathing. While not an endless supply (perhaps 10 gallons), it was a very enjoyable luxury. Of course, it assumes that there's plenty of sunshine, but if so -- voila -- a

323

Al/Al2O3 Composite Coating Deposited by Flame Spraying for Marine Applications: Alumina Skeleton Enhances Anti-Corrosion and Wear Performances  

Science Journals Connector (OSTI)

Here we report aluminum-alumina composite coatings fabricated by flame spraying for potential marine applications against both corrosion and wear. Microstructure examination suggested dense coating structures and...

Jing Huang; Yi Liu; Jianhui Yuan; Hua Li

2014-04-01T23:59:59.000Z

324

Water Electrolysis  

Science Journals Connector (OSTI)

In this chapter, water electrolysis technology and its applications for nuclear hydrogen ... of the chapter, a general classification of water electrolysis systems is given, the fundamentals of water electrolysis

Greg F. Naterer; Ibrahim Dincer…

2013-01-01T23:59:59.000Z

325

Water Intoxication  

E-Print Network [OSTI]

2008, May 14). Too much water raises seizure risk in babies.id=4844 9. Schoenly, Lorry. “Water Intoxication and Inmates:article/246650- overview>. 13. Water intoxication alert. (

Lingampalli, Nithya

2013-01-01T23:59:59.000Z

326

Influence of spraying parameters on the electrochemical behaviour of HVOF thermally sprayed stainless steel coatings in 3.4% NaCl  

Science Journals Connector (OSTI)

Stainless steel coatings obtained by High Velocity Oxygen Fuel (HVOF) were characterized using optical (OM) and scanning electron microscopy (SEM), electron probe micro-analysis, X-ray diffraction (XRD), open-circuit potential (EOC) measurements, electrochemical impedance spectroscopy (EIS) and polarisation tests. Differences among coated steels were mainly related with the gun-substrate distance parameter (310 mm for samples A and B and 260 mm for C and D). The open-circuit potential values measured for all the samples after 18 h of immersion in aerated and unstirred 3.4% NaCl solution were: ? 0.334, ? 0.360, ? 0.379 and ? 0.412 V vs. Ag/AgCl,KClsat. for samples A to D, respectively. For EIS measurements, Nyquist plots showed higher capacitive semi-circle for samples sprayed at longer distance, indicating higher corrosion resistance in NaCl solution.

J.M. Guilemany; J. Fernández; N. Espallargas; P.H. Suegama; A.V. Benedetti

2006-01-01T23:59:59.000Z

327

Evolutions in 3D numerical relativity using fixed mesh refinement  

E-Print Network [OSTI]

We present results of 3D numerical simulations using a finite difference code featuring fixed mesh refinement (FMR), in which a subset of the computational domain is refined in space and time. We apply this code to a series of test cases including a robust stability test, a nonlinear gauge wave and an excised Schwarzschild black hole in an evolving gauge. We find that the mesh refinement results are comparable in accuracy, stability and convergence to unigrid simulations with the same effective resolution. At the same time, the use of FMR reduces the computational resources needed to obtain a given accuracy. Particular care must be taken at the interfaces between coarse and fine grids to avoid a loss of convergence at higher resolutions, and we introduce the use of "buffer zones" as one resolution of this issue. We also introduce a new method for initial data generation, which enables higher-order interpolation in time even from the initial time slice. This FMR system, "Carpet", is a driver module in the freely available Cactus computational infrastructure, and is able to endow generic existing Cactus simulation modules ("thorns") with FMR with little or no extra effort.

Erik Schnetter; Scott H. Hawley; Ian Hawke

2004-03-02T23:59:59.000Z

328

Ash level meter for a fixed-bed coal gasifier  

DOE Patents [OSTI]

An ash level meter for a fixed-bed coal gasifier is provided which utilizes the known ash level temperature profile to monitor the ash bed level. A bed stirrer which travels up and down through the extent of the bed ash level is modified by installing thermocouples to measure the bed temperature as the stirrer travels through the stirring cycle. The temperature measurement signals are transmitted to an electronic signal process system by an FM/FM telemetry system. The processing system uses the temperature signals together with an analog stirrer position signal, taken from a position transducer disposed to measure the stirrer position to compute the vertical location of the ash zone upper boundary. The circuit determines the fraction of each total stirrer cycle time the stirrer-derived bed temperature is below a selected set point, multiplies this fraction by the average stirrer signal level, multiplies this result by an appropriate constant and adds another constant such that a 1 to 5 volt signal from the processor corresponds to a 0 to 30 inch span of the ash upper boundary level. Three individual counters in the processor store clock counts that are representative of: (1) the time the stirrer temperature is below the set point (500.degree. F.), (2) the time duration of the corresponding stirrer travel cycle, and (3) the corresponding average stirrer vertical position. The inputs to all three counters are disconnected during any period that the stirrer is stopped, eliminating corruption of the measurement by stirrer stoppage.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

329

Flame quality monitor system for fixed firing rate oil burners  

DOE Patents [OSTI]

A method and apparatus for determining and indicating the flame quality, or efficiency of the air-fuel ratio, in a fixed firing rate heating unit, such as an oil burning furnace, is provided. When the flame brightness falls outside a preset range, the flame quality, or excess air, has changed to the point that the unit should be serviced. The flame quality indicator output is in the form of lights mounted on the front of the unit. A green light indicates that the flame is about in the same condition as when the burner was last serviced. A red light indicates a flame which is either too rich or too lean, and that servicing of the burner is required. At the end of each firing cycle, the flame quality indicator goes into a hold mode which is in effect during the period that the burner remains off. A yellow or amber light indicates that the burner is in the hold mode. In this mode, the flame quality lights indicate the flame condition immediately before the burner turned off. Thus the unit can be viewed when it is off, and the flame condition at the end of the previous firing cycle can be observed.

Butcher, Thomas A. (Pt. Jefferson, NY); Cerniglia, Philip (Moriches, NY)

1992-01-01T23:59:59.000Z

330

Isolated thermocouple amplifier system for stirred fixed-bed gasifier  

DOE Patents [OSTI]

A sensing system is provided for determining the bed temperature profile of the bed of a stirred, fixed-bed gasifier including a plurality of temperature sensors for sensing the bed temperature at different levels, a transmitter for transmitting data based on the outputs of the sensors to a remote operator's station, and a battery-based power supply. The system includes an isolation amplifier system comprising a plurality of isolation amplifier circuits for amplifying the outputs of the individual sensors. The isolation amplifier circuits each comprise an isolation operational amplifier connected to a sensor; a first "flying capacitor" circuit for, in operation, controlling the application of power from the power supply to the isolation amplifier; an output sample and hold circuit connected to the transmitter; a second "flying capacitor" circuit for, in operation, controlling the transfer of the output of the isolation amplifier to the sample and hold circuit; and a timing and control circuit for activating the first and second capacitor circuits in a predetermined timed sequence.

Fasching, George E. (Morgantown, WV)

1992-01-01T23:59:59.000Z

331

Fixed denial system for access control of nuclear weapons  

SciTech Connect (OSTI)

The Fixed Denial System (FDS) is a simple, low cost, vertical, underground silo used to store individual nuclear weapons within secured areas of present storage sites. The normal storage position of each weapon is at or near the top of the shaft, allowing rapid operational weapon access and removal. In response to a threat, the weapon within a storage canister can be dropped to the bottom of the shaft where it is automatically locked in place. Once the alert condition is resolved and control of the site reestablished, the weapon canister is unlocked with a coded signal and retrieved. This system offers a high degree of hardening and access denial that is characteristic of Vertical Underground Storage (VUGS) systems. An aboveground test apparatus was constructed to demonstrate the feasibility of using a pneumatic air cushion, which is generated by the free-fall of the weapon container, to control impact velocity and descent time. Stockpile weapons that might be stored in the FDS include the W33, W48, W79, and the W54 ADM.

Willan, V.O.; Gustafson, E.C.

1981-12-01T23:59:59.000Z

332

Fixed-bed bioreactor system for the microbial solubilization of coal  

DOE Patents [OSTI]

A fixed-bed bioreactor system for the conversion of coal into microbially solubilized coal products. The fixed-bed bioreactor continuously or periodically receives coal and bio-reactants and provides for the large scale production of microbially solubilized coal products in an economical and efficient manner. An oxidation pretreatment process for rendering coal uniformly and more readily susceptible to microbial solubilization may be employed with the fixed-bed bioreactor. 1 fig., 1 tab.

Scott, C.D.; Strandberg, G.W.

1987-09-14T23:59:59.000Z

333

Effects of Injector Conditions on the Flame Lift-Off Length of DI Diesel Sprays  

SciTech Connect (OSTI)

The effects of injection pressure and orifice diameter on the lift-off length of a direct-injection (DI) diesel spray (defined as the farthest upstream location of high temperature combustion) were investigated using a natural light emission imaging technique. The lift-off length experiments were conducted in a constant-volume combustion vessel under quiescent, heavy-duty DI diesel engine conditions using a Phillips research grade No.2 diesel fuel. The results show that natural light emission at 310 nm provides an excellent marker of the lift-off length. At this location, natural light emission at 310 nm is dominated by OH chemiluminescence generated by high-temperature combustion chemistry. Lift-off lengths determined from images of natural light emission at 310 nm show that as either injection pressure (i.e., injection velocity) or orifice diameter increase, the lift-off length increases. The observed lift-off length increase was linearly dependent on injection velocity, the same dependency as previously noted for gas jets. The lift-off length increase with increasing orifice diameter, however, is different than the independence of lift-off length on orifice diameter noted for gas jets An important overall observation was made by considering the lift-off length data in conjunction with data from recent investigations of liquid-phase fuel penetration and spray development. The combined data suggests that a systematic evolution of the relationship and interaction between various processes in a DI diesel spray has been occurring over time, as injection pressures have been increased and orifice diameters reduced as part of efforts to meet emissions regulations. The trends observed may eventually help explain effects of parameters such as injection pressure and orifice diameter on emissions.

D. L. Siebers; B. S. Higgins

2000-07-01T23:59:59.000Z

334

Plasma Sprayed Pour Tubes and Other Melt Handling Components for Use in Gas Atomization  

SciTech Connect (OSTI)

Ames Laboratory has successfully used plasma sprayed ceramic components made from yttria stabilized zirconia as melt pouring tubes for gas atomization for many years. These tubes have proven to be strong, thermal shock resistant and versatile. Various configurations are possible both internally and externally. Accurate dimensions are achieved internally with a machined fugitive graphite mandrel and externally by diamond grinding. The previous study of the effect of spray parameters on density was extended to determine the effect of the resulting density on the thermal shock characteristics on down-quenching and up-quenching. Encouraging results also prompted investigation of the use of plasma spraying as a method to construct a melt pour exit stopper that is mechanically robust, thermal shock resistant, and not susceptible to attack by reactive melt additions. The Ames Laboratory operates two close-coupled high pressure gas atomizers. These two atomizers are designed to produce fine and coarse spherical metal powders (5{mu} to 500{mu} diameter) of many different metals and alloys. The systems vary in size, but generally the smaller atomizer can produce up to 5 kg of powder whereas the larger can produce up to 25 kg depending on the charge form and density. In order to make powders of such varying compositions, it is necessary to have melt systems capable of heating and containing the liquid charge to the desired superheat temperature prior to pouring through the atomization nozzle. For some metals and alloys this is not a problem; however for some more reactive and/or high melting materials this can pose unique challenges. Figure 1 is a schematic that illustrates the atomization system and its components.

Byrd, David; Rieken, Joel; Heidloff, Andy; Besser, Matthew; Anderson, Iver

2011-04-01T23:59:59.000Z

335

Preparation of polyaniline/sodium alanate hybrid using a spray-drying process  

SciTech Connect (OSTI)

Nowadays, hydrogen is highly interesting as an energy source, in particular in the automotive field. In fact, hydrogen is attractive as a fuel because it prevents air pollution and greenhouse emissions. One of the main problems with the utilization of hydrogen as a fuel is its on-board storage. The purpouse of this work was to develop a new hybrid material consisting of a polyaniline matrix with sodium alanate (NaAlH{sub 4}) using a spray-drying process. The polyaniline used for this experiment was synthesized by following a well-established method for the synthesis of the emeraldine base form of polyaniline using dodecylbenzenesulfonic acid as dopant. Micro particles of polyaniline/sodium alanate hybrids with 30 and 50 wt% of sodium alanate were prepared by using a spray-drying technique. Dilute solutions of polyaniline/sodium alanate were first prepared, 10g of the solid materials were mixed with 350 ml of toluene under stirring at room temperature for 24h and the solutions were dried using spray-dryer (Büchi, Switzerland) with 115°C of an inlet temperature. The hybrids were analyzed by differential scanning calorimetry, FT-IR and scanning electron microscopy (SEM). The addition of sodium alanate decreased the glass transition temperature of the hybrids when compared to neat polyaniline. FT-IR spectrum analysis was performed to identify the bonding environment of the synthesized material and was observed that simply physically mixture occurred between polyaniline and sodium alanate. The SEM images of the hybrids showed the formation of microspheres with sodium alanate dispersed in the polymer matrix.

Moreira, B. R., E-mail: bru-rms@yahoo.com.br, E-mail: fabiopassador@gmail.com, E-mail: pessan@ufscar.br; Passador, F. R., E-mail: bru-rms@yahoo.com.br, E-mail: fabiopassador@gmail.com, E-mail: pessan@ufscar.br; Pessan, L. A., E-mail: bru-rms@yahoo.com.br, E-mail: fabiopassador@gmail.com, E-mail: pessan@ufscar.br [Dep. de Engenharia de Materiais, Federal University of São Carlos (Brazil)

2014-05-15T23:59:59.000Z

336

COMMERCIAL DEMONSTRATION OF THE MANUFACTURED AGGREGATE PROCESSING TECHNOLOGY UTILIZING SPRAY DRYER ASH  

SciTech Connect (OSTI)

Universal Aggregates, LLC proposes to design, construct and operate a lightweight aggregate manufacturing plant at the Birchwood Power Facility in King George, Virginia. The installation and start-up expenses for the Birchwood Aggregate Facility are $19.5 million. The DOE share is $7.2 million (37%) and the Universal Aggregates share is $12.3 (63%). The project team consists of CONSOL Energy Inc., P.J. Dick, Inc., SynAggs, LLC, and Universal Aggregates, LLC. The Birchwood Facility will transform 115,000 tons per year of spray dryer by-products that are currently being disposed of in an offsite landfill into 167,000 tons of a useful product, lightweight aggregates that can be used to manufacture lightweight aggregates that can be used to manufacture lightweight and medium weight masonry blocks. In addition to the environmental benefits, the Birchwood Facility will create nine (9) manufacturing jobs plus additional employment in the local trucking industry to deliver the aggregate to customers or reagents to the facility. A successful demonstration would lead to additional lightweight aggregate manufacturing facilities in the United States. There are currently twenty-one (21) spray dryer facilities operating in the United States that produce an adequate amount of spray dryer by-product to economically justify the installation of a lightweight aggregate manufacturing facility. Industry sources believe that as additional scrubbing is required, dry FGD technologies will be the technology of choice. Letters from potential lightweight aggregate customers indicate that there is a market for the product once the commercialization barriers are eliminated by this demonstration project.

Roy Scandrol

2003-10-01T23:59:59.000Z

337

COMMERCIAL DEMONSTRATION OF THE MANUFACTURED AGGREGATE PROCESSING TECHNOLOGY UTILIZING SPRAY DRYER ASH  

SciTech Connect (OSTI)

Universal Aggregates, LLC proposes to design, construct and operate a lightweight aggregate manufacturing plant at the Birchwood Power Facility in King George, Virginia. The installation and start-up expenses for the Birchwood Aggregate Facility are $19.5 million. The DOE share is $7.2 million (37%) and the Universal Aggregates share is $12.3 (63%). The project team consists of CONSOL Energy Inc., P.J. Dick, Inc., SynAggs, LLC, and Universal Aggregates, LLC. The Birchwood Facility will transform 115,000 tons per year of spray dryer by-products that are currently being disposed of in an offsite landfill into 167,000 tons of a useful product, lightweight aggregates that can be used to manufacture lightweight aggregates that can be used to manufacture lightweight and medium weight masonry blocks. In addition to the environmental benefits, the Birchwood Facility will create eight (8) manufacturing jobs plus additional employment in the local trucking industry to deliver the aggregate to customers or reagents to the facility. A successful demonstration would lead to additional lightweight aggregate manufacturing facilities in the United States. There are currently twenty-one (21) spray dryer facilities operating in the United States that produce an adequate amount of spray dryer by-product to economically justify the installation of a lightweight aggregate manufacturing facility. Industry sources believe that as additional scrubbing is required, dry flue gas desulfurization (FGD) technologies will be the technology of choice. Letters from potential lightweight aggregate customers indicate that there is a market for the product once the commercialization barriers are eliminated by this demonstration project.

Roy Scandrol

2003-04-01T23:59:59.000Z

338

Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

intracellular transport and trafficking. Citation: Liberton ML, JR Austin, RH Berg, and HB Pakrasi.2011."Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...

339

Robert Lemos, News.com, 2004.12.01: "Microsoft rushes out critical IE fix  

E-Print Network [OSTI]

saves it for later. See, e.g., phpWebSite security hole fixed 2004.11.16. #12;Mixed-source command lines

Bernstein, Daniel

340

Genome-wide Expression Assay Comparison Across Frozen and Fixed Postmortem Brain Tissue Samples  

E-Print Network [OSTI]

Continued) B6207 Control M Heart attack/disease Frozen B6756Fixed B6208 Control F Heart attack/disease Frozen B4756

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

EM Finds Success with Fixed-Priced Hybrid Contract Approach Benefittin...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

fixed-priced procurements in the future, and some may involve a new combination of contracting strategies proven successful at the Hanford site. The Hanford success story marked...

342

Off-peak summer performance enhancement for rows of fixed solar thermal collectors using reflective surfaces.  

E-Print Network [OSTI]

??The possibility of increasing the efficiency of fixed solar thermal collectors without greatly adding to the cost or complexity of the overall solar collection system… (more)

Armenta, Casiano

2011-01-01T23:59:59.000Z

343

Tarifs Tlphonique (26/12/2013) -Page 1/5 Destination Tarifs Fixe Tarifs mobile Exception  

E-Print Network [OSTI]

/5 Destination Tarifs Fixe Tarifs mobile Exception Comores 0,49/mn 0,49/mn Congo 0,49/mn 0,49/mn Congo RDC 0

Rossi, Vivien

344

Regional distributions of nitrogen-fixing bacteria in the Pacific Ocean  

Science Journals Connector (OSTI)

ABSTRACT: We evaluated the regional distributions of six nitrogen (N2)-fixing bacteria in the North Pacific Ocean using quantitative polymerase chain reaction

345

E-Print Network 3.0 - aerated submerged fixed-film Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

January 2007 Summary: Trickling Filter - Facility type with fixed film bacteria. Wastewater is typically pumped up... TRANSFER EFFICIENCY MONITORING OF WASTEWATER AERATION...

346

Memory difference control of unknown unstable fixed points: Drifting parameter conditions and delayed measurement  

E-Print Network [OSTI]

Difference control schemes for controlling unstable fixed points become important if the exact position of the fixed point is unavailable or moving due to drifting parameters. We propose a memory difference control method for stabilization of a priori unknown unstable fixed points by introducing a memory term. If the amplitude of the control applied in the previous time step is added to the present control signal, fixed points with arbitrary Lyapunov numbers can be controlled. This method is also extended to compensate arbitrary time steps of measurement delay. We show that our method stabilizes orbits of the Chua circuit where ordinary difference control fails.

Jens Christian Claussen; Thorsten Mausbach; Alexander Piel; Heinz Georg Schuster

2006-09-20T23:59:59.000Z

347

Reduce Hot Water Use for Energy Savings | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Reduce Hot Water Use for Energy Savings Reduce Hot Water Use for Energy Savings Reduce Hot Water Use for Energy Savings June 15, 2012 - 5:51pm Addthis Low-flow fixtures and showerheads can achieve water savings of 25%–60%. | Photo courtesy of ©iStockphoto/DaveBolton. Low-flow fixtures and showerheads can achieve water savings of 25%-60%. | Photo courtesy of ©iStockphoto/DaveBolton. What does this mean for me? Fix leaks, install low-flow fixtures, and purchase an energy-efficient dishwasher and clothes washer to use less hot water and save money. You can lower your water heating costs by using and wasting less hot water in your home. To conserve hot water, you can fix leaks, install low-flow fixtures, and purchase an energy-efficient dishwasher and clothes washer. Fix Leaks You can significantly reduce hot water use by simply repairing leaks in

348

Focused analyte spray emission apparatus and process for mass spectrometric analysis  

DOE Patents [OSTI]

An apparatus and process are disclosed that deliver an analyte deposited on a substrate to a mass spectrometer that provides for trace analysis of complex organic analytes. Analytes are probed using a small droplet of solvent that is formed at the junction between two capillaries. A supply capillary maintains the droplet of solvent on the substrate; a collection capillary collects analyte desorbed from the surface and emits analyte ions as a focused spray to the inlet of a mass spectrometer for analysis. The invention enables efficient separation of desorption and ionization events, providing enhanced control over transport and ionization of the analyte.

Roach, Patrick J. (Kennewick, WA); Laskin, Julia (Richland, WA); Laskin, Alexander (Richland, WA)

2012-01-17T23:59:59.000Z

349

Transparent and conducting ZnO films grown by spray pyrolysis  

Science Journals Connector (OSTI)

ZnO films were prepared using the simple, flexible and cost-effective spray pyrolysis technique at different substrate temperatures and precursor molarity values. The films' structural, optical and electrical properties were investigated by x-ray diffraction, UV–VIS transmittance spectroscopy, profilometry and voltage–current–temperature (VIT) measurements. The films prepared at substrate temperatures above 400 °C appear better crystallized with (0?0?2) preferred orientation and exhibit higher visible transmittance (65–80%), higher electrical n-type semiconductor conductivity (10–50 (? cm)?1), lower activation energy (

Lazhar Hadjeris; Labidi Herissi; M Badreddine Assouar; Thomas Easwarakhanthan; Jamal Bougdira; Nadhir Attaf; M Salah Aida

2009-01-01T23:59:59.000Z

350

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings  

DOE Patents [OSTI]

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Farmer, Joseph C; Wong, Frank M.G.; Haslam, Jeffery J; Ji, Xiaoyan; Day, Sumner D; Blue, Craig A; Rivard, John D.K.; Aprigliano, Louis F; Kohler, Leslie K; Bayles, Robert; Lemieux, Edward J; Yang, Nancy; Perepezko, John H; Kaufman, Larry; Heuer, Arthur; Lavernia, Enrique J

2013-09-03T23:59:59.000Z

351

Compositions of corrosion-resistant Fe-based amorphous metals suitable for producing thermal spray coatings  

DOE Patents [OSTI]

A method of coating a surface comprising providing a source of amorphous metal that contains manganese (1 to 3 atomic %), yttrium (0.1 to 10 atomic %), and silicon (0.3 to 3.1 atomic %) in the range of composition given in parentheses; and that contains the following elements in the specified range of composition given in parentheses: chromium (15 to 20 atomic %), molybdenum (2 to 15 atomic %), tungsten (1 to 3 atomic %), boron (5 to 16 atomic %), carbon (3 to 16 atomic %), and the balance iron; and applying said amorphous metal to the surface by a spray.

Farmer, Joseph C.; Wong, Frank M. G.; Haslam, Jeffery J.; Ji, Xiaoyan (Jane); Day, Sumner D.; Blue, Craig A.; Rivard, John D. K.; Aprigliano, Louis F.; Kohler, Leslie K.; Bayles, Robert; Lemieux, Edward J.; Yang, Nancy; Perepezko, John H.; Kaufman, Larry; Heuer, Arthur; Lavernia, Enrique J.

2013-07-09T23:59:59.000Z

352

Marketing water  

E-Print Network [OSTI]

management, water conservation programs Story by Kathy Wythe tx H2O | pg. 17 public information programs and materials that increase awareness about regional water issues. The company recently opened the TecH2O, a water resource learning center...tx H2O | pg. 16 W ith rapid population growth and the memory of the worst drought in 50 years, cities and groups are promoting programs that educate their constituents about water quality, water conservation, and landscape management. Many...

Wythe, Kathy

2008-01-01T23:59:59.000Z

353

SPRAY FOAM IN ACCESSIBLE SPACES:BEST PRACTICES AND CASE STUDIES FOR RETROFIT IN MIXED-HUMID CLIMATE  

SciTech Connect (OSTI)

Heating and cooling the house is one of the homeowners major expenses. Reducing these costs, saving energy, and creating a healthier, more comfortable indoor environment are good reasons to consider improving the building thermal envelope. Improvements usually consider increasing the amount of insulation, reducing the infiltration of outside air, and controlling moisture in existing buildings. This report describes the use of spray foam materials to insulate, seal, and control moisture. This discussion is limited to treating areas that are accessible. What is accessible, however, can vary depending on the type of renovation. If the building has been gutted or exterior surfaces removed, there are more options. This report will look at areas to consider for spray foam application and discuss the types of spray foams available and their uses. A number of case studies are presented to show the effectiveness of this retrofit in existing houses based on performance data.

Christian, Jeffrey E [ORNL] [ORNL; Gant, Kathy [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

2013-12-01T23:59:59.000Z

354

Wave and place fixed DPOAE maps of the human ear  

Science Journals Connector (OSTI)

Human intermodulation distortion product otoacoustic emissions (DPOAE) can be a mixture of low and high latency components. They have different level phase and suppression characteristics which indicate that emissions arise both from the frequency region of the primary tones directly and indirectly via the DP frequency place. Which component dominates the measured DPOAE in the ear canal depends on the stimulus parameters especially the frequency ratio f 2 /f 1 . Interference between the two emissions adds complexity to measurements of DPOAE. The behavior and even existence of whichever emission route is lower in level often cannot directly be deduced from the raw DPOAE data because the other emission covers it. It is therefore not known whether both emissions are present for all stimulus parameters or whether the trends seen in each emission when they are the dominant emission route continue under stimulus conditions when they are not dominant. In this study the two DPOAE components are separated by a post-processing method. Previously maps of raw DPOAE data against f 2 /f 1 and DP frequency have been obtained. To separate the components sets of data consisting of f 2 /f 1 sweeps were transformed by an inverse Fourier transform into the time domain. The low and high latency components appeared as two distinct peaks because of their different phase gradients. These peaks were separated by windowing in the time domain and two frequency domain maps were reconstructed representing the low and high latency DPOAEs. It was found that the low latency component of the 2?f 1 ?f 2 DP was only emitted strongly with f 2 /f 1 between approximately 1.1 and 1.3. The removal of the high latency component revealed the low ratio edge of this region at which the level falls sharply. However the low latency emission has been traced at reduced amplitude over a wide range of stimulus parameters. Although previously only observed at small frequency ratios the high latency component was found to be present widely in the lower sideband its level reducing slowly at larger f 2 /f 1 . Its phase behavior changes in the lower sideband being approximately constant with DP frequency at small ratios of f 2 /f 1 but deviating from this at wider ratios. These results support the hypothesis that a DPOAE component which propagates to and is re-emitted from the DP frequency place (place fixed emission) is present across a wide parameter range. However for all but the close primary condition the lower sideband DPOAE is dominated by direct emission from the region of f 2 and f 1 wave interaction(wave fixed emission). A simple transmission line model is presented to illustrate how the observed DPOAE maps can arise on the basis of this hypothesis.

Richard D. Knight; David T. Kemp

2001-01-01T23:59:59.000Z

355

Assessment of light water reactor power plant cost and ultra-acceleration depreciation financing  

E-Print Network [OSTI]

Although in many regions of the U.S. the least expensive electricity is generated from light-water reactor (LWR) plants, the fixed (capital plus operation and maintenance) cost has increased to the level where the cost ...

El-Magboub, Sadek Abdulhafid.

356

Wave Energy Extraction from an Oscillating Water Column in a Truncated Circular Cylinder  

E-Print Network [OSTI]

Oscillating Water Column (OWC) device is a relatively practical and convenient way that converts wave energy to a utilizable form, which is usually electricity. The OWC is kept inside a fixed truncated vertical cylinder, which is a hollow structure...

Wang, Hao

2013-07-19T23:59:59.000Z

358

Temperature dependence of dynamic Young's modulus and internal friction in three plasma sprayed NiCrAlY coating alloys  

E-Print Network [OSTI]

TEMPERATURE DEPENDENCE OF DYNAM'IIC YOUNG'S MODULUS AND INTERNAL FRICTION IN THREE PLASMA SPRAYED NiCrAlY COATING -ALLOYS A Thesis LLOYD STEVEN COOK Submitted to the 08ice of Graduate Studies of Texas AE M University in part. al full...'illment of the requirement for the degree of MASTER OF SCIENCE August 1989 Itiajor Subject: l'dechanical Engineering TEMPERATURE DEPENDENCE OF DYNAMIC YOUNG'S MODULUS AND INTERNAL FRICTION IN THREE PLASMA SPRAYED NiCrAIY COATING ALLOYS A Thesis by LLOYD STEVEN COOK...

Cook, Lloyd Steven

1989-01-01T23:59:59.000Z

359

Water Rules: In Texas, conservation increasingly the law of the land  

E-Print Network [OSTI]

#28;#30;#30;#21; law that stated homeowner associations may not prohibit or restrict a homeowner from installing outdoor water- conservation measures such as rainwater harvesting systems, drip irrigation and composting. #29;e associations can... up to #22;#30;#30; gallons a day of untreated graywater for landscape irrigation, gardening or composting, with some restrictions. #29;e restrictions included not using graywater from washing machines that frequently washed diapers, not spraying...

Wythe, Kathy

2013-01-01T23:59:59.000Z

360

Thermal performance of oil spray cooling system for in-wheel motor in electric vehicles  

Science Journals Connector (OSTI)

Abstract The cooling of the motor in an in-wheel system is critical to its performance and durability. In the present study, the shape of the channel in the hollow shaft for the oil spray cooling of a high-capacity 35 kW in-wheel motor was optimized, and the thermal performance of the motor was evaluated by numerical analysis and experiments. The thermal flow was analyzed by evaluating the thermal performance of two conventional cooling models of in-wheel motors under conditions of continuous rating base speed. For conventional model #1, in which the cooling oil is stagnant in the lower end of the motor, the maximum temperature of the coil was 221.7 °C. For conventional model #2, in which the cooling oil circulates through the exit and entrance of the housing and jig, the maximum temperature of the coil was 155.4 °C. Both models thus proved to be unsuitable for in-wheel motors because the motor control specifications limit the maximum temperature to 150 °C. We designed and manufactured an enhanced model for in-wheel motors, which we equipped with an optimized channel for the oil spray cooling mode, and evaluated its thermal performance under continuous rating conditions. The maximum temperatures of the coil at the base and maximum speeds, which were set as the design points, were below the motor temperature limit, being 138.1 and 137.8 °C, respectively.

Dong Hyun Lim; Sung Chul Kim

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Studies on transparent spinel magnesium indium oxide thin films prepared by chemical spray pyrolysis  

Science Journals Connector (OSTI)

Ternary semiconducting oxide compound magnesium indium oxide films (MgIn2O4), manifesting high transparency were prepared by metal organic chemical spray pyrolysis technique. Precursors prepared for various cationic ratios of Mg/In = 0.35, 0.40, 0.45 and 0.50 were thermally sprayed onto quartz substrates, decomposed at 450 °C and the spinel phase evolution was studied. X-ray diffraction, Rutherford backscattering and X-ray photoelectron spectroscopy studies have been conducted to confirm the formation of single-phase MgIn2O4 films with Mg/In ratio 0.50. From optical transmission studies, the observed optical band gaps varied from 3.18 to 3.86 eV (0.35 < Mg/In < 0.5). The electrical conductivity variations of these films were measured in the temperature range between 30 and 150 °C by four-probe technique (34.07–1.44 × 10? 5 S cm? 1) and the Hall coefficient showed n-type electrical conduction and high carrier concentration (0.16 × 1020–0.89 × 17 cm? 3).

A. Moses Ezhil Raj; V. Senthilkumar; V. Swaminathan; Joachim Wollschläger; M. Suendorf; M. Neumann; M. Jayachandran; C. Sanjeeviraja

2008-01-01T23:59:59.000Z

362

Spray Cooling Modeling: Droplet Sub-Cooling Effect on Heat Transfer  

SciTech Connect (OSTI)

Spray cooling has become increasingly popular as a thermal management solution for high-heat flux (>100 W/cm{sup 2}) applications such as laser diodes and radars. Research has shown that using sub-cooled liquid can increase the heat flux from the hot surface. The objective of this study was to use a multi-phase numerical model to simulate the effect of a sub-cooled droplet impacting a growing vapor bubble in a thin (<100 {mu}m) liquid film. The two-phase model captured the liquid-vapor interface using the level set method. The effects of surface tension, viscosity, gravity and phase change were accounted for by using a modification to the incompressible Navier-Stokes equations, which were solved using the finite difference method. The computed liquid-vapor interface and temperature distributions were visualized for better understanding of the heat removal process. To understand the heat transfer mechanisms of sub-cooled droplet impact on a growing vapor bubble, various initial droplet temperatures were modeled (from 20 deg. C below saturation temperature to saturation temperature). This may provide insights into how to improve the heat transfer in future spray cooling systems.

Johnston, Joseph E.; Selvam, R. P. [Power Electronics Leveling Solutions LLC, 700 Research Boulevard, Fayetteville, AR 72701 (United States); Bell 4190 University of Arkansas, Fayetteville, AR 72701 (United States); Silk, Eric A. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2008-01-21T23:59:59.000Z

363

A Robust STATCOM Control to Augment LVRT capability of Fixed Speed Wind Turbines  

E-Print Network [OSTI]

A Robust STATCOM Control to Augment LVRT capability of Fixed Speed Wind Turbines M. J. Hossain, H Compensator (STATCOM) to enhance the Low-Voltage Ride- Through (LVRT) capability of fixed-speed wind turbines cost and maintenance due to rugged brushless construction. Constant speed wind turbines equipped

Pota, Himanshu Roy

364

Taxes-Fixed Price UT-B Contracts Div Page 1 of 1  

E-Print Network [OSTI]

Taxes-Fixed Price UT-B Contracts Div July 2006 Page 1 of 1 taxes-fp-ext-july06.doc TAXES--FIXED PRICE (July 2006) FEDERAL, STATE, AND LOCAL TAXES (a) Definitions. As used throughout this clause in this Agreement, the Agreement price includes all applicable Federal taxes in effect on the Agreement date. (c

Pennycook, Steve

365

A Rank-Corrected Procedure for Matrix Completion with Fixed Basis Coefficients  

E-Print Network [OSTI]

A Rank-Corrected Procedure for Matrix Completion with Fixed Basis Coefficients Weimin Miao, Shaohua address low-rank matrix completion problems with fixed basis coefficients, which include the low-rank correlation matrix completion in various fields such as the financial market and the low-rank density matrix

Chaudhuri, Sanjay

366

Target Acquisition, Localization, and Surveillance using a Fixed-Wing Mini-UAV and Gimbaled Camera  

E-Print Network [OSTI]

Target Acquisition, Localization, and Surveillance using a Fixed-Wing Mini-UAV and Gimbaled Camera acquisition and continuous surveillance using fixed-wing UAVs is a difficult task due to the many degrees of freedom inherent in aircraft and gimbaled cameras. Mini-UAVs further complicate the problem by introducing

Goodrich, Michael A.

367

A Systemic Design Methodology of PM Generators for Fixed-Pitch Marine Current Turbines  

E-Print Network [OSTI]

A Systemic Design Methodology of PM Generators for Fixed-Pitch Marine Current Turbines Sofiane of permanent magnet (PM) generator associated with fixed-pitch turbine for tidal energy generation. The main problem with marine current turbines systems are the maintenance requirements of the drive

Paris-Sud XI, Université de

368

Characterization of Inorganic Biocarriers That Moderate System Upsets during Fixed-Film Biotreatment Processes  

Science Journals Connector (OSTI)

...improving the reliability of fixed-film...dried prior to analysis. Biocarrier...configuration. Bio- reactor studies were...levels. However, reactor productivity...The decline in reactor performance...phenol removal. Analysis of the effluent...increase the reliability of fixed-film...

Don R. Durham; Leda C. Marshall; James G. Miller; Alan B. Chmurny

1994-09-01T23:59:59.000Z

369

Optimal control of a time-varying catalytic fixed bed reactor with catalyst deactivation  

Science Journals Connector (OSTI)

The paper deals with the linear-quadratic control problem for a time-varying partial differential equation model of a catalytic fixed-bed reactor. The classical Riccati equation approach, for time-varying infinite-dimensional systems, is extended to ... Keywords: catalyst deactivation, fixed bed reactor, infinite dimensional time-varying system, linear quadratic optimal control

L. Mohammadi; I. Aksikas; J. F. Forbes

2009-06-01T23:59:59.000Z

370

Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting  

E-Print Network [OSTI]

Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina sufficient schedulability tests for fixed-priority pre-emptive scheduling of a real-time system under energy constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage

Boyer, Edmond

371

New Glycolipid specific to Nitrogen-fixing Blue-green Algae  

Science Journals Connector (OSTI)

... layer chromatography on silica gel of chloroform-methanol extracts from three nitrogen-fixing blue-green algae (Anabaena cylindrica, Anabaena flos-aquae and Chlorogloea fritschii) has, however, indicated the ... Chromatographie studies on the corresponding lipid fractions from the two other nitrogen-fixing blue-green algae suggest that these are also heterogeneous, and it would seem that these organisms possibly ...

B. W. NICHOLS; B. J. B. WOOD

1968-02-24T23:59:59.000Z

372

T-700:Red Hat: kernel security, bug fix, and enhancement update |  

Broader source: Energy.gov (indexed) [DOE]

700:Red Hat: kernel security, bug fix, and enhancement update 700:Red Hat: kernel security, bug fix, and enhancement update T-700:Red Hat: kernel security, bug fix, and enhancement update August 24, 2011 - 3:45pm Addthis PROBLEM: Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. PLATFORM: Red Hat Enterprise Linux Desktop (v. 6) Red Hat Enterprise Linux HPC Node (v. 6) Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Server EUS (v. 6.1.z) Red Hat Enterprise Linux Workstation (v. 6) ABSTRACT: Red Hat: kernel security, bug fix, and enhancement update. reference LINKS: RHSA-2011: 1189-1 Secunia Advisory: SA45746 Red Hat Download CVE-2011-1182 , CVE-2011-1576 CVE-2011-1593 , CVE-2011-1776 CVE-2011-1898 , CVE-2011-2183

373

July/August 2006 West Nile Spraying and Bees Lead a Bee To Water Tips from Award Winner  

E-Print Network [OSTI]

the Sac/Yolo Mosquito and Vector Control agency had to make aerial applications of an "adulticide good and bad bugs, would be killed. The Sac/Yolo Vector Control personnel have worked for years

Ferrara, Katherine W.

374

Soot formation modelling of n-heptane sprays under diesel engine conditions using the Conditional Moment Closure  

E-Print Network [OSTI]

1 Soot formation modelling of n-heptane sprays under diesel engine conditions using the Conditional-volume vessel under diesel engine conditions under different ambient densities (14.8 and 30 kg/m3 ) and ambient that the conditional moment closure approach is a promising framework for soot modelling under Diesel engine conditions

Daraio, Chiara

375

Application methods and evaluations of ultra-low-volume sprays for controlling the bollworm, tobacco budworm and boll weevil  

E-Print Network [OSTI]

, than dusts for control of insect paste of cotton (Paranoia et xd, lgh6x Beau end gainss, 1950). These sprays could be applied at much lower gaLLoneges per acre than the inorgsxd. c asd botanxd. cal iusecticides. Pcntou (1950) applied toxxaphene...

Nemec, Stanley Joseph

2012-06-07T23:59:59.000Z

376

Multi-nozzle array spray cooling for large area high power devices in a closed loop system  

Science Journals Connector (OSTI)

Abstract A prototype of a closed loop system was built to study multi-nozzle array spray cooling on high-power, large-area electronic devices. Fifty-four nozzles with an in-lined array of 9 × 6 were applied to spray cool a simulated 6U electronic card using R134a. Simple drainage concepts were introduced to assist the drainage of both liquid and vapour on the heated surface. The results indicated a promising prospect of using a multi-nozzle array on large-area power electronics cooling. 16 kW heat was removed from the 6U card area by maintaining the mean surface temperature below 26.5  ° C . Heat transfer coefficient up to 2.8  × 10 4 W / m 2 K was obtained, and liquid usage fraction as high as 0.88 was achieved before CHF occurred. It was found that increasing nozzle pressure drop or flow rate enhanced heat transfer and gave better surface temperature uniformity. Chamber pressure significantly influenced mean surface temperature, but had no observable effects on surface temperature uniformity. The control of chamber pressure can maintain a constant temperature on the heated surface when heat load varied largely. The results also showed that the spray-to-spray interactions had inconspicuous effects on local surface temperatures but rather the distance from a location relative to the drainage outlets.

J.L. Xie; Y.B. Tan; T.N. Wong; F. Duan; K.C. Toh; K.F. Choo; P.K. Chan; Y.S. Chua

2014-01-01T23:59:59.000Z

377

Preparation of high-Tc superconducting thick films and power conducting tubes by a low-pressure plasma spraying  

SciTech Connect (OSTI)

Superconducting thick films of YBaCuO and BiSrCaCuO systems have been prepared using a low-pressure plasma spraying technique. The chemical composition of the deposits was very close to that of the spraying powders. After the post-annealing, films showed zero resistance temperatures: Tc of -- 90K for YBaCuO and -- 60K for BiSrCaCuO, respectively. The superconducting power tubes were successfully produced by a low-pressure plasma spraying. 100 - 200..mu..m thick YBaCuO superconducting films were deposited on the outer surface of the Ni-plated Cu tubes. After the post- annealing at 930/sup 0/C for 1 hr, the films exhibited Tc of 85 - 90K. An improved film preparation process, where a flux layer is coated on the Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub x/ matrix layer by a low-pressure plasma spraying, has been developed. Enhanced critical currents have been achieved through this process.

Tachikawa, K.; Ono, M.; Shinbo, Y.; Suzuk, T.; Kabasawa, M.; Kosuge, S.

1989-03-01T23:59:59.000Z

378

Temporary Waters  

Science Journals Connector (OSTI)

Temporary waters are lakes, ponds, streams, seeps, microhabitats, and other areas that hold water periodically and then dry. They occur across the globe, at all latitudes, and in all biomes, wherever water can collect long enough for aquatic life to develop. These waters are numerous, mostly small, and easily studied. Their biological communities are diverse, have much among-site variation, often include endemic species, and differ from those in permanent waters, contributing to regional biodiversity. Organisms survive through species-specific behavioral, physiological, and life-history adaptations. Community composition and structure change in response to environmental variations. Temporary waters are highly productive and their food webs are relatively simple. For all of these reasons, temporary waters lend themselves to surveys and experimental manipulations designed to test hypotheses about biological adaptation, population regulation, evolutionary processes, community composition and structure, and ecosystem functioning. In many parts of the world, most temporary waters have been lost. The conservation and restoration of vulnerable temporary waters is a major thrust of applied ecology. Also important are applications of ecological understanding to the control of disease vectors, especially pathogen-transmitting mosquitoes, from temporary water habitats. This article describes temporary waters, examines their biota and adaptations, and summarizes key questions about their ecology.

E.A. Colburn

2008-01-01T23:59:59.000Z

379

Water Bugs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bugs Bugs Nature Bulletin No. 221-A March 12, 1966 Forest Preserve District of Cook County Seymour Simon, President Roland F. Eisenbeis, Supt. of Conservation WATER BUGS It is fascinating to lie in a boat or on a log at the edge of the water and watch the drama that unfolds among the small water animals. Among the star performers in small streams and ponds are the Water Bugs. These are aquatic members of that large group of insects called the "true bugs", most of which live on land. Moreover, unlike many other types of water insects, they do not have gills but get their oxygen directly from the air. Those that do go beneath the surface usually carry an oxygen supply with them in the form of a shiny glistening sheath of air imprisoned among a covering of fine waterproof hairs. The common water insect known to small boys at the "Whirligig Bug" is not a water bug but a beetle.

380

Constrained Response Surface Optimisation and Taguchi Methods for Precisely Atomising Spraying Process  

Science Journals Connector (OSTI)

This research presents a development of a design of experiment technique for quality improvement in automotive manufacturing industrial. The quality of interest is the colour shade one of the key feature and exterior appearance for the vehicles. With low percentage of first time quality the manufacturer has spent a lot of cost for repaired works as well as the longer production time. To permanently dissolve such problem the precisely spraying condition should be optimized. Therefore this work will apply the full factorial design the multiple regression the constrained response surface optimization methods or CRSOM and Taguchi’s method to investigate the significant factors and to determine the optimum factor level in order to improve the quality of paint shop. Firstly 2 ? full factorial was employed to study the effect of five factors including the paint flow rate at robot setting the paint levelling agent the paint pigment the additive slow solvent and non volatile solid at spraying of atomizing spraying machine. The response values of colour shade at 15 and 45 degrees were measured using spectrophotometer. Then the regression models of colour shade at both degrees were developed from the significant factors affecting each response. Consequently both regression models were placed into the form of linear programming to maximize the colour shade subjected to 3 main factors including the pigment the additive solvent and the flow rate. Finally Taguchi’s method was applied to determine the proper level of key variable factors to achieve the mean value target of colour shade. The factor of non volatile solid was found to be one more additional factor at this stage. Consequently the proper level of all factors from both experiment design methods were used to set a confirmation experiment. It was found that the colour shades both visual at 15 and 45 angel of measurement degrees of spectrophotometer were nearly closed to the target and the defective at quality gate was also reduced from 0.35 WDPV to 0.10 WDPV. This reveals that the objective of this research is met and this procedure can be used as quality improvement guidance for paint shop of automotive vehicle.

P. Luangpaiboon; Y. Suwankham; S. Homrossukon

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

UNL WATER CENTER WATER CURRENT  

E-Print Network [OSTI]

INSIDE UNL WATER CENTER WATER CURRENT PROTECTING NEBRASKAíS WATER RESOURCES THROUGH RESEARCH with a vision, thereís an untapped market using resources right under our feet,î the University of Nebraska outdoors in India, Bangladesh, China and Viet- nam. Thousands of them have been grown to harvest

Nebraska-Lincoln, University of

382

water pipeline gallery  

Science Journals Connector (OSTI)

water pipeline gallery, water pipeline drift; water pipeline tunnel (US) ? Wasserleitungsrohrstollen m

2014-08-01T23:59:59.000Z

383

Ground Water Ground Sky Sky Water Vegetation Ground Vegetation Water  

E-Print Network [OSTI]

Bear Snow Vegetation RhinoWater Vegetation Ground Water Ground Sky Sky Rhino Water Vegetation Ground Vegetation Water Rhino Water Vegetation Ground Rhino Water Rhino Water Ground Ground Vegetation Water Rhino Vegetation Rhino Vegetation Ground Rhino Vegetation Ground Sky Rhino Vegetation Ground Sky

Chen, Tsuhan

384

ARM - Field Campaign - Water Vapor IOP  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsWater Vapor IOP govCampaignsWater Vapor IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Water Vapor IOP 2000.09.18 - 2000.10.08 Lead Scientist : Henry Revercomb Data Availability Yes For data sets, see below. Description Scientific hypothesis: 1. Microwave radiometer (MWR) observations of the 22 GHz water vapor line can accurately constrain the total column amount of water vapor (assuming a calibration accuracy of 0.5 degC or better, which translates into 0.35 mm PWV). 2. Continuous profiling by Raman lidar provides a stable reference for handling sampling problems and observes a fixed column directly above the site only requiring a single height- independent calibration factor. 3. Agreement between the salt-bath calibrated in-situ probes, chilled

385

Organometallic Polymer Coatings for Geothermal-Fluid-Sprayed Air-Cooled Condensers: Preprint  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 * NREL/CP-550-32148 2 * NREL/CP-550-32148 Organometallic Polymer Coatings for Geothermal- Fluid-Sprayed Air-Cooled Condensers Preprint K. Gawlik National Renewable Energy Laboratory T. Sugama Brookhaven National Laboratory D. Jung Two Phase Engineering & Research, Inc. To be presented at the Geothermal Resources Council Annual Meeting Reno, Nevada September 22-25, 2002 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * Battelle * Bechtel Contract No. DE-AC36-99-GO10337 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US

386

Evaluation of interface strength of plasma sprayed coatings by the local approach  

SciTech Connect (OSTI)

This paper evaluated the interface strength of coating/substrate with different order of stress singularity based on the local approach, where the local stress field was combined with a local criterion of crack instability. Round-bar tension tests and notched three-point bend tests were performed for plasma sprayed coatings. Stress fields were analyzed by 2D FEM. The conventional approach using the stress singularity parameter was not applicable for specimens with different singularity order, because it lost the physical meaning of the singularity parameter. For such circumstance, the Weibull stress employed in the local approach was useful as a singularity independent parameter. The critical Weibull stress at fracture initiation was almost the same irrespective of the specimen geometry and the coating thickness, as far as the fracture occurred in the vicinity of the coating/substrate interface.

Satoh, Susumu [Nagasaki Inst. of Applied Science (Japan). Dept. of Mechanical Engineering; Tsukamoto, Mitsuo [Kumamoto Univ. (Japan). Faculty of Education; Minami, Fumiyoshi; Toyoda, Masao [Osaka Univ. (Japan). Dept. of Welding and Production Engineering

1996-12-01T23:59:59.000Z

387

Spray coated indium-tin-oxide-free organic photodiodes with PEDOT:PSS anodes  

SciTech Connect (OSTI)

In this paper we report on Indium Tin Oxide (ITO)-free spray coated organic photodiodes with an active layer consisting of a poly(3-hexylthiophen) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blend and patterned poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) electrodes. External quantum efficiency and current voltage characteristics under illuminated and dark conditions as well as cut-off frequencies for devices with varying active and hole conducting layer thicknesses were measured in order to characterize the fabricated devices. 60% quantum efficiency as well as nearly four orders of magnitude on-off ratios have been achieved. Those values are comparable with standard ITO devices.

Schmidt, Morten, E-mail: morten.schmidt@nano.ei.tum.de; Falco, Aniello; Loch, Marius; Lugli, Paolo; Scarpa, Giuseppe [Institute for Nanoelectronics, Technical University of Munich, Arcisstr. 21, 80333 Munich (Germany)

2014-10-15T23:59:59.000Z

388

Reusing Water  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reusing Water Reusing Water Reusing Water Millions of gallons of industrial wastewater is recycled at LANL by virtue of a long-term strategy to treat wastewater rather than discharging it into the environment. April 12, 2012 Water from cooling the supercomputer is release to maintain a healthy wetland. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email We reuse the same water up to six times before releasing it back into the environment cleaner than when it was pumped. How many times does LANL reuse water? Wastewater is generated from some of the facilities responsible for the Lab's biggest missions, such as the cooling towers of the Los Alamos Neutron Science Center, one of the Lab's premier science research

389

Water Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water Management This department applies multi-disciplinary science and technology-based modeling to assess complex environmental systems. It integrates ecology, anthropology, and...

390

V-133: Microsoft pulls Patch Tuesday security fix | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

3: Microsoft pulls Patch Tuesday security fix 3: Microsoft pulls Patch Tuesday security fix V-133: Microsoft pulls Patch Tuesday security fix April 14, 2013 - 6:00am Addthis PROBLEM: Microsoft pulls Patch Tuesday security fix PLATFORM: Windows XP Service Pack 3,Windows XP Professional x64 Edition Service Pack 2, Windows Server 2003 Service Pack 2, Windows Server 2003 x64 Edition Service Pack 2, Windows Server 2003 with SP2 for Itanium-based Systems,Windows Vista Service Pack 2, Windows Vista x64 Edition Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2, Windows Server 2008 for Itanium-based Systems Service Pack 2Windows 7 for 32-bit Systems, Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems, Windows

391

T-667: Red Hat Enterprise Linux kernel security and bug fix update |  

Broader source: Energy.gov (indexed) [DOE]

7: Red Hat Enterprise Linux kernel security and bug fix update 7: Red Hat Enterprise Linux kernel security and bug fix update T-667: Red Hat Enterprise Linux kernel security and bug fix update July 13, 2011 - 7:24am Addthis PROBLEM: Red Hat Enterprise Linux kernel security and bug fix update PLATFORM: Vulnerable Linux Kernels; Red Hat Enterprise Linux Desktop (v. 6), Red Hat Enterprise Linux HPC Node (v. 6), Red Hat Enterprise Linux Server (v. 6), Red Hat Enterprise Linux Server EUS (v. 6.1.z), Red Hat Enterprise Linux Workstation (v. 6) ABSTRACT: It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into

392

T-712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and 712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update T-712: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update September 8, 2011 - 10:30am Addthis PROBLEM: A flaw was discovered in Cumin where it would log broker authentication credentials to the Cumin log file. A vulnerability was reported in Red Hat Enterprise MRG Grid. A local user can access the broker password. PLATFORM: Red Hat Enterprise MRG v2 for Red Hat Enterprise Linux (version 5) ABSTRACT: Red Hat Enterprise MRG Grid 2.0 security, bug fix and enhancement update. reference LINKS: RHSA-2011:1249-1 SecurityTracker Alert ID: 1026021 CVE-2011-2925 IMPACT ASSESSMENT: Medium Discussion: A local user exploiting this flaw could connect to the broker outside of Cumin's control and perform certain operations such as scheduling jobs,

393

E-Print Network 3.0 - analog fixed maximum Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SUBGROUPS OF A FREE GROUP Summary: , by the Bestvina-Handel Theorem, and if H has rank exactly n, then H is said to be a maximum-rank 1-auto-fixed... subgroup of F, and...

394

DP: Dynamic Prepage in Postcopy Migration for Fixed-Size Data Load  

Science Journals Connector (OSTI)

Postcopy migration is a mature technology in virtualization. However the performance of postcopy is not stable. We find many memory intensive loads having a high proportion of independent fixed-size data (FSD) ca...

Shuang Wu; Ce Yang; Jianhai Chen; Qinming He; Bei Wang

2014-01-01T23:59:59.000Z

395

Real-time fixed-order lateral H2 controller for micro air vehicle  

Science Journals Connector (OSTI)

This paper presents the design and development of a fixed low-order, robust H2 controller for a micro air vehicle (MAV) named Sarika-2. The controller synthesis uses strengthened discrete optimal projection equations and frequency-dependent ...

M. Meenakshi; M. Seetharama Bhat

2011-01-01T23:59:59.000Z

396

EM Finds Success with Fixed-Priced Hybrid Contract Approach Benefitting Taxpayers  

Broader source: Energy.gov [DOE]

WASHINGTON, D.C. – EM plans to complete more fixed-priced procurements in the future, and some may involve a new combination of contracting strategies proven successful at the Hanford site.

397

Characteristics of Air-blown Gasification for Woods in a Fixed-bed Downdraft Gasifier  

Science Journals Connector (OSTI)

An experimental investigation of a fixed-bed, downdraft air-blown gasifier has been carried out using wooden cubes...3 made of Lauan wood. The reactor is a cylinder with an internal diameter of 200 mm and a heigh...

Chih-Lun Hsi; Tzong-Yuan Wang; Chiu-Hao Liu…

2007-01-01T23:59:59.000Z

398

Alaska - AS 42.05.431 - Power of Commission to Fix Rates | Open...  

Open Energy Info (EERE)

- Power of Commission to Fix Rates Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: Alaska - AS 42.05.431 - Power of Commission...

399

Crimp sealing of tubes flush with or below a fixed surface  

DOE Patents [OSTI]

An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. 8 figs.

Fischer, J.E.; Walmsley, D.; Wapman, P.D.

1996-08-20T23:59:59.000Z

400

Spin physics at a fixed-target experiment at the LHC (AFTER@LHC)  

Science Journals Connector (OSTI)

We outline the opportunities for spin physics which are offered by a next generation and multipurpose fixed-target experiment exploiting the proton LHC beam extracted by a bent crystal. In...

A. Rakotozafindrabe; M. Anselmino; R. Arnaldi…

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Inverse fixed energy scattering problem for the two-dimensional nonlinear Schroedinger operator  

E-Print Network [OSTI]

This work studies the direct and inverse fixed energy scattering problem for two-dimensional Schroedinger equation with rather general nonlinear index of refraction. In particular, using the Born approximation we prove that all singularities of the unknown compactly supported potential from $L^2$-space can be obtained uniquely by the scattering data with fixed positive energy. The proof is based on the new estimates for the Faddeev-Green's function in $L^\\infty$-space.

Georgios Fotopoulos; Valery Serov

2014-12-01T23:59:59.000Z

402

HEAT TRANSFER ANALYSIS FOR FIXED CST AND RF COLUMNS  

SciTech Connect (OSTI)

In support of a small column ion exchange (SCIX) process for the Savannah River Site waste processing program, transient and steady state two-dimensional heat transfer models have been constructed for columns loaded with cesium-saturated crystalline silicotitanate (CST) or spherical Resorcinol-Formaldehyde (RF) beads and 6 molar sodium tank waste supernate. Radiolytic decay of sorbed cesium results in heat generation within the columns. The models consider conductive heat transfer only with no convective cooling and no process flow within the columns (assumed column geometry: 27.375 in ID with a 6.625 in OD center-line cooling pipe). Heat transfer at the column walls was assumed to occur by natural convection cooling with 35 C air. A number of modeling calculations were performed using this computational heat transfer approach. Minimal additional calculations were also conducted to predict temperature increases expected for salt solution processed through columns of various heights at the slowest expected operational flow rate of 5 gpm. Results for the bounding model with no process flow and no active cooling indicate that the time required to reach the boiling point of {approx}130 C for a CST-salt solution mixture containing 257 Ci/liter of Cs-137 heat source (maximum expected loading for SCIX applications) at 35 C initial temperature is about 6 days. Modeling results for a column actively cooled with external wall jackets and the internal coolant pipe (inlet coolant water temperature: 25 C) indicate that the CST column can be maintained non-boiling under these conditions indefinitely. The results also show that the maximum temperature of an RF-salt solution column containing 133 Ci/liter of Cs-137 (maximum expected loading) will never reach boiling under any conditions (maximum predicted temperature without cooling: 88 C). The results indicate that a 6-in cooling pipe at the center of the column provides the most effective cooling mechanism for reducing the maximum temperature with either ion exchange material. Sensitivity calculations for the RF resin porosity, the ambient external column temperature, and the cooling system configuration were performed under the baseline conditions to assess the impact of these parameters on the maximum temperatures. It is noted that the cooling mechanism at the column boundary (forced versus natural convection) and the cooling system configuration significantly impact the maximum temperatures. The analysis results provide quantitative information associated with process temperature control requirements and management of the SCIX column.

Lee, S

2007-10-17T23:59:59.000Z

403

A Study to Verify the Material Surface Concept of Water Table by Examining Analytical and Numerical Models.  

E-Print Network [OSTI]

”. This term defines the water table as having two simultaneous properties: 1) the pressure along the surface is atmospheric pressure, and 2) the water table is fixed to the material, i.e., a set of water particles. This article makes an attempt to explain...

Dadi, Sireesh Kumar

2011-10-21T23:59:59.000Z

404

Fixed Point Analysis of Single Cell IEEE 802.11e WLANs: Uniqueness, Multistability and Throughput Differentiation  

E-Print Network [OSTI]

Fixed Point Analysis of Single Cell IEEE 802.11e WLANs: Uniqueness, Multistability and Throughput Differentiation Venkatesh Ramaiyan1, Anurag Kumar1, Eitan Altman2 Abstract-- We consider the vector fixed point- bitration InterFrame Space (AIFS) values. We consider balanced and unbalanced solutions of the fixed point

Kumar, Anurag

405

Influence of the process parameters on the spray pyrolysis technique, on the synthesis of gadolinium doped-ceria thin film  

SciTech Connect (OSTI)

Graphical abstract: Gas-tight CGO made by spray pyrolysis suitable to be used as SOFC electrolyte. Display Omitted Highlights: ? Dense and crystalline CGO films deposited by spray pyrolysis on various substrates. ? Solvent did not have a strong influence on the film microstructure, defect concentration or thickness. ? The substrate did not have a strong influence on the film microstructure, defect concentration or thickness. ? Films with at least 2.5 ?m of thickness presented high impermeability. ? The films obtained are suitable to use as a SOFC electrolyte. -- Abstract: This work presents the results of a process of optimization applied to gadolinia-doped ceria (Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9?x}, or CGO) thin films, deposited by spray pyrolysis (SP). Spray pyrolysis is a high thermal deposition method that combines material deposition and heat treatment. This combination is advantageous since the post-deposition heat treatment step is not necessary. However, stresses are solidified in the coating during the deposition, which may lead to the initiation of a crack in the coating. The aim of this work was to achieve thin, dense, and continuous CGO coatings, which may be used as gas separation membranes and as a solid state electrochemical interfaces. Dense, flat, low-defect substrates such as silica slides, silicon mono crystal wafers, and porous substrates were used as substrates in this work. Cerium ammonium nitrate and gadolinium acetylacetonate were dissolved in ethanol and butyl carbitol to form a precursor solution that was sprayed on the heated substrates. Process parameters such as solvent composition, deposition rate and different heating regimes were analyzed. The microstructure was analyzed by secondary electron microscopy (SEM) and was found that thin, dense, and defect-free films could be produced on dense and porous substrates. The results obtained show that it is possible to obtain a CGO dense film deposited by spray pyrolysis. X-ray diffraction (XRD) analysis showed that the films were crystalline after the deposition without requiring post-deposition heat treatment. The crystallite size does not vary significantly as a function of the annealing temperature.

Halmenschlager, C.M., E-mail: cibelemh@yahoo.com.br [Laboratory of Materials Ceramic LACER/PPGEM, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha, 99/705C, CEP: 90035-190, Porto Alegre, RS (Brazil); National Research Council, Institute for Fuel Cell Innovation NRC-IFCI, 4250 Wesbrook Mall, V6T 1W5 Vancouver, BC (Canada); Neagu, R. [National Research Council, Institute for Fuel Cell Innovation NRC-IFCI, 4250 Wesbrook Mall, V6T 1W5 Vancouver, BC (Canada)] [National Research Council, Institute for Fuel Cell Innovation NRC-IFCI, 4250 Wesbrook Mall, V6T 1W5 Vancouver, BC (Canada); Rose, L. [National Research Council, Institute for Fuel Cell Innovation NRC-IFCI, 4250 Wesbrook Mall, V6T 1W5 Vancouver, BC (Canada) [National Research Council, Institute for Fuel Cell Innovation NRC-IFCI, 4250 Wesbrook Mall, V6T 1W5 Vancouver, BC (Canada); Department of Materials Engineering, V6T 1Z1 Vancouver, BC (Canada); Malfatti, C.F. [Laboratory of Research in Corrosion LAPEC/PPGEM, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, Setor 4, Prédio 75/2° Andar, CEP: 91501-970, Campus do Vale, Porto Alegre, RS (Brazil)] [Laboratory of Research in Corrosion LAPEC/PPGEM, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, Setor 4, Prédio 75/2° Andar, CEP: 91501-970, Campus do Vale, Porto Alegre, RS (Brazil); Bergmann, C.P. [Laboratory of Materials Ceramic LACER/PPGEM, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha, 99/705C, CEP: 90035-190, Porto Alegre, RS (Brazil)] [Laboratory of Materials Ceramic LACER/PPGEM, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha, 99/705C, CEP: 90035-190, Porto Alegre, RS (Brazil)

2013-02-15T23:59:59.000Z

406

A Study on the Deposition of Al2O3 Coatings on Polymer Substrates by a Plasma Spray/Micro-Arc Oxidation Two-Step Method  

Science Journals Connector (OSTI)

To increase the wear resistance of polymer matrix composites, alumina coatings were deposited on polymer substrates by a two-step method combining plasma spraying and micro-arc oxidation. The microstructures and ...

Guanhong Sun; Xiaodong He; Jiuxing Jiang; Yue Sun…

2013-02-01T23:59:59.000Z

407

Direct Visualization of Spray and Combustion Inside a DI-SI Engine and Its Implications to Flex-Fuel VVT Operations  

Broader source: Energy.gov [DOE]

Fuel, injection timing, and valve deactivation in a DI optical accessible engine with side-mounted, multi-hole injector are investigated using CFD and high-speed imaging of sprays and combustion.

408

Comparative High-Temperature Corrosion Behavior of Ni-20Cr Coatings on T22 Boiler Steel Produced by HVOF, D-Gun, and Cold Spraying  

Science Journals Connector (OSTI)

To protect materials from surface degradations such as wear, corrosion, and thermal flux, a wide variety of materials can be deposited on the materials by several spraying processes. This paper examines and compa...

Gagandeep Kaushal; Niraj Bala; Narinder Kaur…

2014-01-01T23:59:59.000Z

409

Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

Broader source: Energy.gov (indexed) [DOE]

Application of Spray Foam Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing PROJECT aPPliCaTiON Construction: Existing homes with unvented cathedralized roofs. Type: Residential Climate Zones: All TEam mEmbERs Building Science Corporation www.buildingscience.com BASF www.basf.com Dow Chemical Company www.dow.com Honeywell http://honeywell.com Icynene www.icynene.com COdE COmPliaNCE 2012 International Code Council, International Residential Code Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and

410

Synthesis and characterization of spray pyrolysed MgIn2O4 spinel thin films for novel applications  

Science Journals Connector (OSTI)

A novel ternary oxide compound magnesium indate film, MgIn2O4 (MIO), manifesting high transparency and conductivity has been prepared by spray pyrolysis technique. Stoichiometrically mixed precursors were thermally sprayed onto glass substrates and decomposed at 400 and 450 °C and the growth parameters were studied in detail. X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) studies have been conducted to confirm the formation of stoichiometric films. The dc electrical conductivity of these films was measured in the temperature range between 30 and 100 °C by four-probe technique. Measurement of Hall coefficient showed n-type electrical conduction and high-carrier concentration. Optical properties were studied in the wavelength range 280–1500 nm and surface morphology of the MIO films were analyzed by scanning electron microscopy (SEM) and, atomic force microscopy (AFM).

A. Moses Ezhil Raj; B. Subramanian; V. Senthilkumar; M. Jayachandran; C. Sanjeeviraja

2008-01-01T23:59:59.000Z

411

High T/sub c/ superconducting films of Y-Ba-Cu oxide prepared by low-pressure plasma spraying  

SciTech Connect (OSTI)

A low-pressure plasma spraying technique for depositing high T/sub c/ Y-Ba-Cu-O thick films has been developed. Films with a thickness range of 20--100 ..mu..m have been prepared by using Y/sub 0.3/Ba/sub 0.7/CuO/sub x/ powders. After post-annealing in oxygen for 1 h at 950 /sup 0/C, the films, which were deposited on a nimonic alloy substrate heated at 650 /sup 0/C during spraying, exhibited a zero resistance temperature of 90.6 K with a transition width (90%--10%) of 2 K and a critical current density (77 K, 0 T) of 690 A/cm/sup 2/.

Tachikawa, K.; Watanabe, I.; Kosuge, S.; Kabasawa, M.; Suzuki, T.; Matsuda, Y.; Shinbo, Y.

1988-03-21T23:59:59.000Z

412

Comparison of coliphage and bacterial aerosols at a wastewater spray irrigation site.  

Science Journals Connector (OSTI)

...replaced by distilled water plus 0.1% Tween 80...tained 30 ml of distilled water for sampling of dye aerosols...spinning-disk aerosol generator (Environmental Re...ground level. Seeding of water with f2 virus and fluorescein...at the Fort Huachuca Atmospheric Sciences Laboratory...

H T Bausum; S A Schaub; K F Kenyon; M J Small

1982-01-01T23:59:59.000Z

413

Int. J. Spray and Comb. Dynamics -Accepted for publication 1 About the zero Mach number assumption in  

E-Print Network [OSTI]

as much as the the flame forcing ('Rayleigh') term. Besides, the net effect of the non zero Mach numberInt. J. Spray and Comb. Dynamics - Accepted for publication 1 About the zero Mach number assumption in the calculation of thermoacoustic instabilities By F. N I C O U D1 AND K. W I E C Z O R E K1,2 1 University

Paris-Sud XI, Université de

414

Investigating Water  

E-Print Network [OSTI]

........................................................................................... 193 Lesson 11 Water and Pollution........................................................................................................................ 195 Activity 11.1, Pollution, Pollution, Everywhere...! ............................................................................. 205 Record Sheet 11.1, Pollution, Pollution, Everywhere! ..................................................................... 207 Activity 11.2, Pollution at Its Source...

Howard Jr., Ronald A.

2002-01-02T23:59:59.000Z

415

Water Privatisation   

E-Print Network [OSTI]

This dissertation deals with the policy issues of large-scale, urban water privatisation projects in the face of uncertainty and variability. The main objective is to evaluate whether a single policy approach, namely privatisation associated...

Zölls, Elisa

2011-08-17T23:59:59.000Z

416

Computerized Waters  

E-Print Network [OSTI]

with WRAP. TWRI Technical Report 283, April 2005. This report serves as an introductory tutorial to help new users apply the model quickly for basic water availability modeling applications. ? Comparative Evaluation of Generalized Reservoir...

Wythe, Kathy

2006-01-01T23:59:59.000Z

417

Water Electrolysis  

Science Journals Connector (OSTI)

Production of ammonium sulfate fertilizer via synthetic ammonia was a national project in Japan just after World War II, and water electrolysis as the source of hydrogen was active....3 of hydrogen and 700 Nm3 of...

Fumio Hine

1985-01-01T23:59:59.000Z

418

Water Pollution  

Science Journals Connector (OSTI)

Coal bed methane (CBM) gas recovery techniques are unique compared to other production methods. Formation water must be removed, or “dewatered” as it holds the methane gas in the coal seam by hydrostatic pressure...

Alireza Bahadori; Malcolm Clark; Bill Boyd

2013-01-01T23:59:59.000Z

419

Comparison between a spray column and a sieve tray column operating as liquid-liquid heat exchangers  

SciTech Connect (OSTI)

The performance of a spray column and a sieve tray column was compared as a liquid-liquid heat exchanger. In carrying out these studies a 15.2 cm (6.0 in.) diameter column, 183 cm (6.0 ft) tall was utilized. The performance of the spray column as a heat exchanger was shown to correlate with the model of Letan-Kehat which has as a basis that the heat transfer is dominated by the wakeshedding characteristics of the drops over much of the column length. This model defines several hydrodynamic zones along the column of which the wake formation zone at the bottom appears to have the most efficient heat transfer. The column was also operated with four perforated plates spaced two column diameters apart in order to take advantage of the wake formation zone heat transfer. The plates induce coalescence of the dispersed phase and reformation of the drops, and thus cause a repetition of the wake formation zone. It is shown that the overall volumetric heat transfer coefficient in a perforated plate column is increased by a minimum of eleven percent over that in a spray column. A hydrodynamic model that predicts the performance of a perforated plate column is suggested.

Keller, A.; Jacobs, H.R.; Boehm, R.F.

1980-12-01T23:59:59.000Z

420

The effect of solids and dispersant loadings on the suspension viscosities and deposition rates of suspension plasma sprayed YSZ coatings  

Science Journals Connector (OSTI)

Suspension plasma spraying (SPS) is a promising modification of traditional plasma spraying techniques that uses small (? 2 ?m) particles suspended in a liquid to fabricate coatings with fine microstructures and controlled porosity rapidly and without the need for post-deposition heat treatments. These qualities make SPS an interesting new technique to manufacture solid oxide fuel cell (SOFC) active layers. However, in order to be able to manufacture layers with good microstructures, the properties of the feedstock suspension must be optimized to enhance particle dispersion and improve feedability. This study uses a pressurized gas delivery system to feed aqueous YSZ suspensions containing an organic dispersant to a Northwest Mettech Axial III axial injection suspension plasma spray system. Three different dispersant types (polyacrylic acid (PAA), polyethylene imine (PEI) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA)) were characterized and the effects of solid loadings, dispersant type, and dispersant concentration on suspension properties such as viscosity and feedability, and layer characteristics such as microstructure and deposited thickness were examined.

D. Waldbillig; O. Kesler

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Corrosion behavior of an HVOF-sprayed Fe3Al coating in a high-temperature oxidizing/sulfidizing environment  

SciTech Connect (OSTI)

An iron aluminide (Fe3Al) intermetallic coating was deposited onto a F22 (2.25Cr-1Mo) steel substrate using a JP-5000 high velocity oxy-fuel (HVOF) thermal spray system. The as-sprayed coating was examined by electron microscopy and X-ray diffraction and was characterized in terms of oxidation and adhesion. Fe3Al-coated steel specimens were exposed to a mixed oxidizing/sulfidizing environment at 500, 600, 700, and 800DGC for approximately seven days. The gaseous environment consisted of N2-10%CO-5%CO2-2%H2O-0.12%H2S (by volume). All specimens gained mass after exposure to the environment and the mass gains were found to be inversely proportional to temperature increases. Representative specimens exposed at each temperature were cross-sectioned and subjected to examination under a scanning electron microscope (SEM) and X-ray mapping. Results are presented in terms of corrosion weight gain and corrosion product formation. The purpose of the research presented here was to evaluate the effectiveness of an HVOF-sprayed Fe3Al coating in protecting a steel substrate exposed to a fossil energy environment.

Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Shrestha, S. (TWI Ltd.); Harvey, D. (TWI Ltd.)

2005-01-01T23:59:59.000Z

422

METAL-MATRIX COMPOSITES AND THERMAL SPRAY COATINGS FOR EARTH MOVING MACHINES  

SciTech Connect (OSTI)

In the ninth quarter, investigations in steel matrix composites focused on characterization of abrasive wear and fracture test coupons in order to gain a better understanding of the material attributes contributing to the observed behavior in each test. Both the wear and fracture work found that the performance of the carbide cermet based composites was significantly affected by the dissolution of the hard particles and the elements added in hopes of discouraging dissolution. both thrusts focused on abrasive wear characterization. In abrasive wear this led to increase matrix hardness which increased wear resistance, however the fracture toughness of the composites were significantly reduced. In contrast, the oxide based composites demonstrated good fracture characteristics and the oxide particles provided superior protection to the high stress gouging wear imparted by pin-abrasion testing. For the thermal spray coating effort, modified coatings and fusing parameters were explored on simulated components. Significant improvements appear to have been achieved, and are demonstrated in the lack of observable cracking in the coatings. The abrasive wear characteristics of these components will be explored in the 10th quarter. An overview of the progress during the 9th quarter of this project is given below. Additional research details are provided in the limited rights appendix to this report.

D. Trent Weaver; Frank W. Zok; Carlos G. Levi; Matthew T. Kiser

2003-04-01T23:59:59.000Z

423

Method for minimizing decarburization and other high temperature oxygen reactions in a plasma sprayed material  

DOE Patents [OSTI]

A method is disclosed for spray coating material which employs a plasma gun that has a cathode, an anode, an arc gas inlet, a first powder injection port, and a second powder injection port. A suitable arc gas is introduced through the arc gas inlet, and ionization of the arc gas between the cathode and the anode forms a plasma. The plasma is directed to emenate from an open-ended chamber defined by the boundary of the anode. A coating is deposited upon a base metal part by suspending a binder powder within a carrier gas that is fed into the plasma through the first powder injection port; a material subject to degradation by high temperature oxygen reactions is suspended within a carrier gas that is fed into the plasma through the second injection port. The material fed through the second injection port experiences a cooler portion of the plasma and has a shorter dwell time within the plasma to minimize high temperature oxygen reactions. The material of the first port and the material of the second port intermingle within the plasma to form a uniform coating having constituent percentages related to the powder-feed rates of the materials through the respective ports.

Lenling, William J. (Madison, WI); Henfling, Joseph A. (Bosque Farms, NM); Smith, Mark F. (Albuquerque, NM)

1993-06-08T23:59:59.000Z

424

Connecting section and associated systems concept for the spray calciner/in-can melter process  

SciTech Connect (OSTI)

For a number of years, researchers at the Pacific Northwest Laboratory have been developing processes and equipment for converting high-level liquid wastes to solid forms. One of these processes is the Spray Calciner/In-Can Melter system. To immobilize high-level liquid wastes, this system must be operated remotely, and the calcine must be reliably conveyed from the calciner to the melting furnace. A concept for such a remote conveyance system was developed at the Pacific Northwest Laboratory, and equipment was tested under full-scale, nonradioactive conditions. This concept and the design of demonstration equipment are described, and the results of equipment operation during experimental runs of 7 d are presented. The design includes a connecting section and its associated systems - a canister sypport and alignment concept and a weight-monitoring system for the melting furnace. Overall, the runs demonstrated that the concept design is an acceptable method of connecting the two pieces of process equipment together. Although the connecting section has not been optimized in all areas of concern, it provides a first-generation design of a production-oriented system.

Petkus, L.L.; Gorton, P.S.; Blair, H.T.

1981-06-01T23:59:59.000Z

425

Interaction Studies of Ceramic Vacuum Plasma Spraying for the Melting Crucible Materials  

SciTech Connect (OSTI)

Candidate coating materials for re-usable metallic nuclear fuel crucibles, TaC, TiC, ZrC, ZrO2, and Y2O3, were plasmasprayed onto a niobium substrate. The microstructure of the plasma-sprayed coatings and thermal cycling behavior were characterized, and U-Zr melt interaction studies were carried out. The TaC and Y2O3 coating layers had a uniform thickness, and high density with only a few small closed pores showing good consolidation, while the ZrC, TiC, and ZrO2 coatings were not well consolidated with a considerable amount of porosity. Thermal cycling tests showed that the adhesion of the TiC, ZrC, and ZrO2 coating layers with niobium was relatively weak compared to the TaC and Y2O3 coatings. The TaC and Y2O3 coatings had better cycling characteristics with no interconnected cracks. In the interaction studies, ZrC and ZrO2 coated rods showed significant degradations after exposure to U-10 wt.% Zr melt at 1600 degrees C for 15 min., but TaC, TiC, and Y2O3 coatings showed good compatibility with U-Zr melt.

Jong Hwan Kim; Hyung Tae Kim; Yoon Myung Woo; Ki Hwan Kim; Chan Bock Lee; R. S. Fielding

2013-10-01T23:59:59.000Z

426

Synthesis and characterization of CdIn2O4 thin films by spray pyrolysis technique  

Science Journals Connector (OSTI)

Transparent conducting cadmium indium oxide (CIO) thin films were deposited onto preheated glass substrates by using spray pyrolysis technique with cadmium acetate and indium acetate as precursors for Cd and In ions, respectively. The films have been deposited at various substrate temperatures within 250–325 °C. As-deposited films were annealed at optimized temperature of 400 °C for 2 h in order to enhance the film properties under ambient air atmosphere. These films were characterized by X-ray diffraction (XRD), SEM, optical absorption and Hall effect techniques. The XRD studies reveal that films are of polycrystalline CdIn2O4 with cubic spinel structure and crystallinity increases appreciably after annealing. Optical absorption study shows the presence of direct optical transition and the band gap energy, estimated for as-deposited and annealed films were observed to be 3.1 and 3.0 eV, respectively. The decrease of electrical resistivity from 91.2 × 10?3 to 1.92 × 10?3 ? cm have been observed after annealing, due to improvement in the crystallinity of the films. The highest figure of merit observed in the present study is 4.51 × 10?3 cm2 ??1.

R.J. Deokate; C.H. Bhosale; K.Y. Rajpure

2009-01-01T23:59:59.000Z

427

Characterization of grain boundary conductivity of spin-sprayed ferrites using scanning microwave microscope  

SciTech Connect (OSTI)

Grain boundary electrical conductivity of ferrite materials has been characterized using scanning microwave microscope. Structural, electrical, and magnetic properties of Fe{sub 3}O{sub 4} spin-sprayed thin films onto glass substrates for different length of growth times were investigated using a scanning microwave microscope, an atomic force microscope, a four-point probe measurement, and a made in house transmission line based magnetic permeameter. The real part of the magnetic permeability shows almost constant between 10 and 300?MHz. As the Fe{sub 3}O{sub 4} film thickness increases, the grain size becomes larger, leading to a higher DC conductivity. However, the loss in the Fe{sub 3}O{sub 4} films at high frequency does not increase correspondingly. By measuring the reflection coefficient s{sub 11} from the scanning microwave microscope, it turns out that the grain boundaries of the Fe{sub 3}O{sub 4} films exhibit higher electric conductivity than the grains, which contributes loss at radio frequencies. This result will provide guidance for further improvement of low loss ferrite materials for high frequency applications.

Myers, J.; Nicodemus, T.; Zhuang, Y., E-mail: yan.zhuang@wright.edu [Department of Electrical Engineering, Wright State University, Dayton, Ohio 45435 (United States); Watanabe, T.; Matsushita, N. [Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama (Japan); Yamaguchi, M. [Department of Electrical Engineering, Tohoku University, Sendai 980-8579 (Japan)

2014-05-07T23:59:59.000Z

428

APPLICATION OF THE FIXED NEUTRON ABSORBER STANDARD ANSI/ANS-8.21  

SciTech Connect (OSTI)

The specific applications standard, ANSI/ANS-8.21, provides guidance and insight in the use of fixed neutron absorbers. Organizations involved with handling and processing fissionable material will benefit from the systematic guidance provided by the standard in implementing engineered criticality safety controls. Numerous applications have demonstrated the successful implementation of fixed neutron absorbers as engineered safety features replacing administrative controls and substantial increases in mass loading. Upgrading the scope and usefulness of the standard by expanding the appendices is in progress.

TOFFER, H.

2004-07-26T23:59:59.000Z

429

Crop Water Requirement and Water Use Efficiency  

Science Journals Connector (OSTI)

Water use efficiency is defined as ratio of yield to irrigation water requirement (De Pascale and Maggio 2005) WUE=yield/irrigation water requirement (kg crop/m3 irrigation water) ...

Christian von Zabeltitz

2011-01-01T23:59:59.000Z

430

EXTENSION WATER SUMMIT PRIORITY: WATER CONSERVATION  

E-Print Network [OSTI]

programs) · Audience: homeowners Outcome 4: Increase water reuse and recycling programs · Example program: Water harvesting ­ rain barrels and cisterns · Audience: home owners #12;: Water conservation. Conserve Florida's finite water resources by teaching rural, suburban and urban

Kane, Andrew S.

431

Arnold Schwarzenegger WATER HEATERS AND HOT WATER  

E-Print Network [OSTI]

Arnold Schwarzenegger Governor WATER HEATERS AND HOT WATER DISTRIBUTION SYSTEMS;#12;Appendices Appendix A. Multifamily Water Heating Construction Practices, Pricing and Availability Survey Report Appendix B. Multifamily Water Heating Controls Performance Field Report Appendix C. Pipe

432

Water Boatman  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water Boatman Water Boatman Name: Joshua Location: N/A Country: N/A Date: N/A Question: I am doing a research on water boatman. I go through your web, I only find little information about it. Can you give me its habitat, its appearance, life cycles and communication between themselves and they defenses themselves? Replies: Find a good book in the library on insects, also on pond biology/ecology, as boatmen live in ponds and marshes. It should be easy to find. J.Elliott Try this web site: http://www.dnr.state.il.us/ctap.ctaphome.htm or http://www.dnr.state.il.us/nredu/nredpage.htm this is the state of Illinois Dept. of Natural Resources homepage and somewhere on there is a page called "bugpage". They have pictures and characteristics of aquatic insects there. good luck

433

Water Revisited  

Science Journals Connector (OSTI)

...explains the su-percooling behavior. The important issue...Hydrophobic Interactions The behavior of water toward non-polar...structures ofthe clath-rate hydrates for many ofthese nonpolar...underlying the anomalous behavior of supercooled wa-ter...Schuster, G. Zundel, C. Sand-SCIENCE, VOL. 209...

Frank H. Stillinger

1980-07-25T23:59:59.000Z

434

Whither water?  

Science Journals Connector (OSTI)

... proposal for the future seems to have been ruled out for some time to come. Desalination has been widely mooted as a practical system of obtaining pure water in Britain, ... addition, the environment lobby, which by and large seems to favour the idea of desalination, has not, perhaps, taken full account of the impact on the coastal environment ...

John Gribbin

1974-07-26T23:59:59.000Z

435

Phase transition in compressible Ising systems at fixed volume Akira Onuki and Akihiko Minami  

E-Print Network [OSTI]

Phase transition in compressible Ising systems at fixed volume Akira Onuki and Akihiko Minami transition behavior of compressible Ising systems at constant volume by varying the temperature. Simulations have been performed on compressible Ising systems and a number of numerical results still remain

436

Fixed-Orientation Equilateral Triangle Matching of Point Sets Jasine Babu  

E-Print Network [OSTI]

Fixed-Orientation Equilateral Triangle Matching of Point Sets Jasine Babu Department of Computer Science and Automation, Indian Institute of Science, Bangalore, India. Ahmad Biniaz, Anil Maheshwari, Michiel Smid School of Computer Science, Carleton University, Ottawa, Canada Abstract Given a point set P

Smid, Michiel

437

Overview of results from the Fermilab fixed target and collider experiments  

SciTech Connect (OSTI)

In this paper we present a review of recent QCD related results from Fermilab fixed target and collider experiments. Topics covered range from structure functions through W/Z production, heavy quark production and jet angular distributions. We also include the current state of knowledge about leptoquark pair production in hadronic collisions.

Montgomery, H.E.

1997-06-01T23:59:59.000Z

438

Semi-Autonomous Human-UAV Interfaces for Fixed-Wing Mini-UAVs  

E-Print Network [OSTI]

Semi-Autonomous Human-UAV Interfaces for Fixed-Wing Mini-UAVs Morgan Quigley Brigham Young University Provo, UT, USA beard@ee.byu.edu Abstract-- We present several human-UAV interfaces that support real-time control of a small semi-autonomous UAV. These interfaces are designed for searching tasks

Goodrich, Michael A.

439

Exploring user preferences for indoor navigation support through a combination of mobile and fixed displays  

Science Journals Connector (OSTI)

In this paper we explore, through a formative study, user preferences for indoor navigation support using a combination of mobile and fixed displays along with a range of navigation content such as digital 2D maps, 3D route visualizations (presented ... Keywords: 3D visualization, digital displays, digital maps, graphical directional signage, indoor navigation, mobile phones

Faisal Taher; Keith Cheverst

2011-08-01T23:59:59.000Z

440

Per-Unit Royalty vs Fixed Fee: The Case of Weak Patents  

E-Print Network [OSTI]

Per-Unit Royalty vs Fixed Fee: The Case of Weak Patents Rabah Amiry David Encaouaz Yassine a per-unit royalty or a ...xed fee when her innovation is covered by a weak patent, i.e. a patent of competition is not speci...ed, we show that the patent holder prefers to use a per-unit royalty scheme

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Modeling Process Characteristics and Performance of Fixed and Fluidized Bed Regenerative Thermal Oxidizer  

Science Journals Connector (OSTI)

Modeling Process Characteristics and Performance of Fixed and Fluidized Bed Regenerative Thermal Oxidizer ... (7)?Cheng, W.-H.; Chou, M.-S.; Lee, W.-S.; Huang, B.-J. Applications of Low-Temperature Regenerative Thermal Oxidizers to Treat Volatile Organic Compounds. ...

Pietropaolo Morrone; Francesco P. Di Maio; Alberto Di Renzo; Mario Amelio

2006-05-26T23:59:59.000Z

442

Testing the Fixed Anvil Temperature Hypothesis in a Cloud-Resolving Model  

Science Journals Connector (OSTI)

Using cloud-resolving simulations of tropical radiative–convective equilibrium, it is shown that the anvil temperature changes by less than 0.5 K with a 2-K change in SST, lending support to the fixed anvil temperature (FAT) hypothesis. The ...

Zhiming Kuang; Dennis L. Hartmann

2007-05-01T23:59:59.000Z

443

Periodic Charging Scheme for Fixed-Priority Real-Time Systems with Renewable Energy  

E-Print Network [OSTI]

to the limited capacity of the energy storage unit. With energy harvesting, in theory it becomes possiblePeriodic Charging Scheme for Fixed-Priority Real-Time Systems with Renewable Energy Mario Bambagini, Fairfax, VA, USA e-mail: aydin@cs.gmu.edu Abstract--Energy harvesting systems are gaining increasing

Aydin, Hakan

444

Student accuracy in reading logarithmic plots: the problem and how to fix it  

E-Print Network [OSTI]

Student accuracy in reading logarithmic plots: the problem and how to fix it Andrew F. Heckler@ilstu.edu Abstract-- Through extensive student testing and interviews, we found that the majority of university sophomore, junior, and senior engineering students in a standard introductory materials science engineering

Heckler, Andrew F.

445

A Scalable Decision Procedure for Fixed-Width Bit-Vectors Roberto Bruttomesso  

E-Print Network [OSTI]

A Scalable Decision Procedure for Fixed-Width Bit-Vectors Roberto Bruttomesso Università della Svizzera Italiana Lugano, Switzerland natasha.sharygina@usi.ch ABSTRACT Efficient decision procedures procedure for the core theory of bit-vectors that exploits a reduction to equality reasoning. The proce

Sharygina, Natasha

446

Toward an Optimal Fixed-Priority Algorithm for Energy-Harvesting Real-Time Systems  

E-Print Network [OSTI]

on their energy consumption. Thus, the results of this work rely on the assumption that tasks energy consumptionToward an Optimal Fixed-Priority Algorithm for Energy-Harvesting Real-Time Systems Yasmina the real-time xed-priority scheduling problem for battery-powered embedded systems whose energy storage

Paris-Sud XI, Université de

447

Complete VariableLength ``FixFree'' Codes David Gillman \\Lambda  

E-Print Network [OSTI]

Complete Variable­Length ``Fix­Free'' Codes David Gillman \\Lambda Institute for Mathematics & Its­CCR and Darpa contract N00014­92­J­1799. Email address: gillman@ima.umn.edu y Supported by NSF grants

Rivest, Ronald L.

448

Foundations of Physics Letters, VoL 8, No. 6, 199.5 FIXING A HOLE  

E-Print Network [OSTI]

Foundations of Physics Letters, VoL 8, No. 6, 199.5 FIXING A HOLE F.A. Muller Utrecht University, Foundations of Science Department P.O. Box 80.000, 3508 TA Utrecht, The Netherlands e-mail: muller. The composition applies directly to the uni- verse. Keys: general relativity, hole argument, diffeomorphism

Seevinck, Michiel

449

A Fixed Point Analysis of a Gene Pool GA with Mutation Alden H. Wright #  

E-Print Network [OSTI]

A Fixed Point Analysis of a Gene Pool GA with Mutation Alden H. Wright # Computer Science University of Montana USA wright@cs.umt.edu 44 121 414 2793 Jonathan E. Rowe Computer Science University Alden Wright was visiting the School of Computer Science, University of Birmingham, UK, supported

Wright, Alden H.

450

A Fixed Point Analysis of a Gene Pool GA with Mutation Alden H. Wright  

E-Print Network [OSTI]

A Fixed Point Analysis of a Gene Pool GA with Mutation Alden H. Wright Computer Science Department University of Montana, USA wright@cs.umt.edu Jonathan E. Rowe School of Computer Science The University is to move the population closer to This paper was written while Alden Wright was visiting the School

Poli, Riccardo

451

Robust STATCOM control for the stabilisation of fixed-speed wind turbines during low voltages  

E-Print Network [OSTI]

and rotor- speed instability and more so if the wind turbine is connected to a weak grid. To prevent is still being produced by squirrel-cage induction generators (SCIGs) which are directly connected to the grid and operate at an almost fixed-speed [3]. They are advantageous as wind generators for their low

Pota, Himanshu Roy

452

Simultaneous measurement of x-ray absorption spectra and kinetics : a fixed-bed, plug-flow operando reactor.  

SciTech Connect (OSTI)

An inexpensive fixed-bed, plug-flow operando reactor is described in which X-ray absorbance and kinetic data can be measured simultaneously. Pt L3 (11.56 keV) XANES and EXAFS data were obtained on a 1.5% Pt/silica catalyst in borosilicate glass reactors of different diameters, 3-6 mm, and thicknesses, 0.3-1.2 mm, some of which are capable of operation at pressures up to about 40 atm. Additionally, polyimide tubular reactors with low absorbance can be used for lower energy edges of the 3d transition metals, or fluorescence detection for low concentration or highly absorbing supports. With the polyimide reactor, however, the pressure is limited to {approx}3.5 atm and the reaction temperature to about 300 C. To validate the reactor, the rate and activation energies for the water-gas shift reaction on 2% Pd, 13.7% Zn on Al2O3 catalyst were within 15% of those obtained in a standard laboratory reactor, which is within laboratory reproducibility. In addition, the Pd K edge (24.35 keV) XANES and EXAFS data on pre-reduced catalyst were identical to that previously determined on a regular cell. The EXAFS data show that the degree of Pd-Zn alloy formation changes with reaction temperature demonstrating the importance of characterizing the catalyst under reaction conditions.

Fingland, B. R.; Ribeiro, F. H.; Miller, J. T.; Purdue Univ.

2009-08-01T23:59:59.000Z

453

High-speed thermal imaging of yttria-stabilized zirconia droplet impinging on substrate in plasma spraying  

SciTech Connect (OSTI)

The authors have developed an in situ monitoring system that captures the impacting phenomena of plasma-sprayed particles at 1x10{sup 6} frames/s. The system clearly captured deformation and cooling processes of an yttria-stabilized zirconia droplet of 50 {mu}m in diameter impinging at 170 m/s on a smooth quartz glass substrate kept at room temperature. The images show that the liquid sheet jetting out sideways from the droplet detached from the substrate and kept on spreading without disintegration until its maximum extent. While the sheet was spreading, the center region of the flattened droplet cooled down much more rapidly.

Shinoda, Kentaro; Murakami, Hideyuki; Kuroda, Seiji; Oki, Sachio; Takehara, Kohsei; Etoh, Takeharu Goji [Composites and Coatings Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); School of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi Osaka, Osaka 577-8502 (Japan)

2007-05-07T23:59:59.000Z

454

Microstructural aspects of low-pressure plasma-sprayed CoNiCrAlY coating on Hastelloy X  

SciTech Connect (OSTI)

A Co-32Ni-21Cr-8Al-0.5Y alloy coating plasma sprayed on Hastelloy X. The microstructure of the coating layer consist of ..gamma.. phase solid solution, ..gamma..' phase, and Y-rich intermetallic phase. This coating exhibits excellent oxidation and sulfidation resistance after exposure in air and in sodium sulfate at 1,000/sup 0/C for 60 h, due to the formation of ..cap alpha..-Al/sub 2/O/sub 3/ oxide scale. However, the presence of chloride in the sodium sulfate leads to rupture of the aluminium oxide scale, and this results in the precipitation of chlorides and sulfides within the coating layer.

Tjong, S.C.; Shih, G.E.; Ho, N.J.

1989-01-01T23:59:59.000Z

455

Impact of “Non-Behavioral Fixed Effects” on Water Use: Weather and Economic Construction Differences on Residential Water Use in Austin, Texas  

E-Print Network [OSTI]

air conditioning and swimming pools (Hanke & Mare, 1984).to house versus lot size. Swimming Pool Approximately 2% of

Tinker, Audrey; Bame, Sherry; Burt, Richard; Speed, Michael

2005-01-01T23:59:59.000Z

456

Water|Energy Energy|Water  

Science Journals Connector (OSTI)

Water|Energy Energy|Water ... This issue of Environmental Science & Technology features articles addressing the concept of the “water–energy nexus”. ... Perrone et al. invoke the concept in their title, in creating a tool to account for the “energy [used] for water and water [used] for energy” (Environ. ...

Darcy J. Gentleman

2011-05-12T23:59:59.000Z

457

Cleaner, Safer Water through Water Safety Plans  

E-Print Network [OSTI]

CS232615A Cleaner, Safer Water through Water Safety Plans National Center for Environmental Health). Water Safety Plans A Water Safety Plan (WSP) is a preventive management approach used to manage threats to a drinking water system--from catchment to consumer. It helps in the · Management of activities

458

WATER RESOURCES NEBRASKA WATER RESOURCES RESEARCH INSTITUTE  

E-Print Network [OSTI]

and energy are inextricably bound. Energy is consumed and sometimes produced by every form of water resourcesWATER RESOURCES NEBRASKA WATER RESOURCES RESEARCH INSTITUTE 212 AGRICULTURAL ENGINEERING BUILDING of the National Environmental Policy Act of 1969, water resources professionals squarely faced the fact that water

Nebraska-Lincoln, University of

459

Ground water provides drinking water, irrigation for  

E-Print Network [OSTI]

Ground water provides drinking water, irrigation for crops and water for indus- tries. It is also connected to surface waters, and maintains the flow of rivers and streams and the level of wetlands- tion of those along Lake Michigan, most communi- ties, farms and industries still rely on ground water

Saldin, Dilano

460

Regional Water Management: Adapting to Uncertain Water  

E-Print Network [OSTI]

Regional Water Management: Adapting to Uncertain Water Supply and Demand Jim Schneider, Ph · How Nebraska manages water · Dealing with uncertain water supplies: adaptive management #12;Regional-wide, systematic approach · Flexible--Adaptive Management Adaptive Manageme nt #12;Integrated Water Management

Nebraska-Lincoln, University of

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Cultivation of macroscopic marine algae and fresh water aquatic weeds  

SciTech Connect (OSTI)

The ORCA clone of the red seaweed Gracilaria tikvahiae has been in culture continuously for over two years. Yield for the past year has averaged 12 g ash-free dry wt/m/sup 2/ .day (17.5 t/a.y) in suspended 2600-1 aluminum tank cultures with four exchanges of enriched seawater per day and continuous aeration. Yields from nonintensive pond-bottom culture, similar to commercial Gracilaria culture methods in Taiwan, averaged 3 g afdw/m/sup 2/.day in preliminary experiments. Rope and spray cultures were not successful. Yields of water hyacinths from March 1978 to March 1979 averaged 25 g afdw/m/sup 2/.day (37 t/a.y). Season, nutrient availability (form and quantity) and stand density were found to affect the relative proportions of structural and nonstructural tissue in water hyacinths and thereby significantly affect digestibility of and methane production by the plants. Pennywort (Hydrocotyle) grew poorly in winter and its annual yield averaged only one-third that of water hyacinth. Water lettuce (Pistia) appears more comparable to hyacinths in preliminary studies and its yields will be monitored throughout a complete year. Stable, continuous anaerobic digestion of both water hyacinths and Gracilaria has been maintained with an average gas production from both species of 0.4 1/g volatile solids at 60% methane.

Ryther, J.H.

1982-02-01T23:59:59.000Z

462

DOE/EA-1449; Commercial Demonstration of the Manufactured Aggregate Processing Technology Utilizing Spray Dryer Ash, King George County, Virginia (August 2002)  

Broader source: Energy.gov (indexed) [DOE]

9 9 ENVIRONMENTAL ASSESSMENT Commercial Demonstration of the Manufactured Aggregate Processing Technology Utilizing Spray Dryer Ash, King George County, Virginia United States Department of Energy National Energy Technology Laboratory August 2002 Commercial Demonstration of the Manufactured Aggregate Processing Technology Utilizing Spray-dryer Ash, King George County, Virginia ENVIRONMENTAL ASSESSMENT 2 National Environmental Policy Act (NEPA) Compliance Cover Sheet Proposed Action: The proposed action is for the U.S. Department of Energy (DOE) to provide cost- shared financial support to Universal Aggregates, LLC, for the design, construction, and operation of a lightweight aggregate manufacturing plant at the Mirant-Birchwood Power Plant Facility (Mirant-Birchwood Facility) in King George County, Virginia.

463

Commercial Demonstration of the Manufactured Aggregate Processing Technology Utilizing Spray Dryer Ash  

SciTech Connect (OSTI)

Universal Aggregates LLC (UA) was awarded a cost sharing Co-operative Agreement from the Department of Energy (DOE) through the Power Plant Improvement Initiative Program (PPII) to design, construct and operate a lightweight aggregate manufacturing plant at the Birchwood Power Facility in King George, Virginia in October 2001. The Agreement was signed in November 2002. The installation and start-up expenses for the Birchwood Aggregate Facility are $19.5 million. The DOE share is $7.2 million (37%) and the UA share is $12.3 million (63%). The original project team consists of UA, SynAggs, LLC, CONSOL Energy Inc. and P. J. Dick, Inc. Using 115,000 ton per year of spray dryer ash (SDA), a dry FGD by-product from the power station, UA will produce 167,000 tons of manufactured lightweight aggregate for use in production of concrete masonry units (CMU). Manufacturing aggregate from FGD by-products can provide an economical high-volume use and substantially expand market for FGD by-products. Most of the FGD by-products are currently disposed of in landfills. Construction of the Birchwood Aggregate Facility was completed in March 2004. Operation startup was begun in April 2004. Plant Integration was initiated in December 2004. Integration includes mixing, extrusion, curing, crushing and screening. Lightweight aggregates with proper size gradation and bulk density were produced from the manufacturing aggregate plant and loaded on a stockpile for shipment. The shipped aggregates were used in a commercial block plant for CMU production. However, most of the production was made at low capacity factors and for a relatively short time in 2005. Several areas were identified as important factors to improve plant capacity and availability. Equipment and process control modifications and curing vessel clean up were made to improve plant operation in the first half of 2006. About 3,000 tons of crushed aggregate was produced in August 2006. UA is continuing to work to improve plant availability and throughput capacity and to produce quality lightweight aggregate for use in commercial applications.

Milton Wu; Paul Yuran

2006-12-31T23:59:59.000Z

464

Microsoft Word - Fixed Ladder and Step-Ladder Inspection Checklist.docx  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ladder Inspections Ladder Inspections Due to recent information, lessons learned, and accident reports from across the DOE complex, emphasis needs to be placed on the importance of inspecting ladders, both portable and fixed. Portable ladders should be inspected prior to each use to ensure they are in good working order. Portable ladders can be damaged during use, handling, moving, and storage, which can render the ladder unsafe for use. Recent information from the DOE complex has shown unsafe conditions that may be found during proper pre- use ladder inspections. All portable ladders with any damage or defect must be removed from service. (Photos 1 and 2) Attachment 1 is a provided as a guideline for portable ladder inspections. Fixed Ladders should be inspected on a routine basis, especially when installed (re-

465

One-parameter semigroups of analytic functions, fixed points and the Koenigs function  

SciTech Connect (OSTI)

Analogues of the Berkson-Porta formula for the infinitesimal generator of a one-parameter semigroup of holomorphic maps of the unit disc into itself are obtained in the case when, along with a Denjoy-Wolff point, there also exist other fixed points. With each one-parameter semigroup a so-called Koenigs function is associated, which is a solution, common for all elements of the one-parameter semigroup, of a certain functional equation (Schroeder's equation in the case of an interior Denjoy-Wolff point and Abel's equation in the case of a boundary Denjoy-Wolff point). A parametric representation for classes of Koenigs functions that takes account of the Denjoy-Wolff point and other fixed points of the maps in the one-parameter semigroup is presented. Bibliography: 19 titles.

Goryainov, Victor V; Kudryavtseva, Olga S [Volzhsky Institute of Humanities, Volgograd Region, Volzhsky (Russian Federation)

2011-07-31T23:59:59.000Z

466

The Barbero connection and its relation to the histories connection formalism without gauge fixing  

E-Print Network [OSTI]

We present a histories version of the connection formalism of general relativity. Such an approach introduces a spacetime description--a characteristic feature of the histories approach--and we discuss the extent to which the usual loop variables are compatible with a spacetime description. In particular, we discuss the definability of the Barbero connection without any gauge fixing. Although it is not the pullback of a spacetime connection onto the three-surface and it does not have a natural spacetime interpretation, this does not mean that the Barbero connection is not suitable variable for quantisation; it appears naturally in the formalism even in absence of gauge fixing. It may be employed therefore, to define loop variables similar to those employed in loop quantum gravity. However, the loop algebra would have to be augmented by the introduction of additional variables.

Ntina Savvidou

2006-02-07T23:59:59.000Z

467

Catalyst deactivation by coking in the MTG process in fixed and fluidized bed reactors  

Science Journals Connector (OSTI)

The validity of a kinetic model for describing the deactivation of a catalyst based on a HZSM5 zeolite has been studied by carrying out reaction in fixed and fluidized bed reactors. The kinetic model takes into account that activity is dependent on the concentration of the lumps of oxygenates, of light olefins and of the remaining products and shows that coke formation capability follows this order. The difference between the deactivation kinetic constants calculated for the fixed and fluidized bed reactors is explained by the effect of the steam produced in the reaction, where coke stripping attenuates deactivation. Future improvements in the deactivation kinetic model must take into account coke stripping by the steam produced in the reaction.

Andrés T. Aguayo; Ana G. Gayubo; JoséM. Ortega; Martin Olazar; Javier Bilbao

1997-01-01T23:59:59.000Z

468

Development of Mobil's Fixed-Bed Methanul-to-Gasoline (MTG) Process  

Science Journals Connector (OSTI)

Mobil recently commercialized its fixed-bed methanol-to-gasoline (MTG) process in a 14, 500 B/D (gasoline) plant, based on natural gas, which is located in New Zealand. Process development studies were carried out in a small pilot plant to define conditions for producing gasoline in good yield and with acceptable product quality while also insuring satisfactory catalyst life. The process was successfully scaled-up by a factor of 100 to a demonstration unit size of 4 B/D. The scale-up factor from the demonstration unit to the commercial plant was in excess of 3000. The characteristics of the fixed-bed MTG process, its development, scale-up to demonstration unit, and assurance of acceptable product quality are discussed.

S. Yurchak

1988-01-01T23:59:59.000Z

469

Study of the regeneration stage of the MTG process in a pseudoadiabatic fixed bed reactor  

Science Journals Connector (OSTI)

The regeneration stage of a catalyst (prepared based on an HZSM-5 zeolite) has been studied in the process of transformation of methanol into hydrocarbons in a fixed bed reactor. The simulation of the operation requires knowledge of the longitudinal profile of coke content in the reactor at the end of the reaction stage. Longitudinal profiles of temperature, coke content and activity during the regeneration are calculated by solving the energy conservation equation in the reactor together with the kinetic equation for coke combustion and with the kinetic equation for reactivation (activity–coke content relationship). The results of the simulation have been experimentally verified in a laboratory unit provided with a pseudoadiabatic fixed bed reactor.

Andrés T Aguayo; Ana G Gayubo; Javier Ereña; Raquel Vivanco; Javier Bilbao

2003-01-01T23:59:59.000Z

470

Fixing All Moduli for M-Theory on K3xK3  

SciTech Connect (OSTI)

We analyze M-theory compactified on K3 x K3 with fluxes preserving half the supersymmetry and its F-theory limit, which is dual to an orientifold of the type IIB string on K3 x (T{sup 2}/Z{sub 2}). The geometry of attractive K3 surfaces plays a significant role in the analysis. We prove that the number of choices for the K3 surfaces is finite and we show how they can be completely classified. We list the possibilities in one case. We then study the instanton effects and see that they will generically fix all of the moduli. We also discuss situations where the instanton effects might not fix all the moduli.

Aspinwall, Paul S.; /Stanford U., Phys. Dept. /SLAC /Duke U., CGTP; Kallosh, Renata; /Stanford U., Phys. Dept.

2005-06-15T23:59:59.000Z

471

Solar tracker motor having a fixed caliper and a translating caliper each with an electromagnetic brake system  

DOE Patents [OSTI]

Concepts and technologies described herein provide for an accurate and cost-effective method for rotating a solar array disk for tracking the movement of the sun. According to various aspects, a motor includes a fixed caliper and a translating caliper positioned adjacent to one another. Electromagnetically controlled brakes on the translating caliper grip the solar array disk while adjacent, but spaced apart, electromagnets on the fixed caliper and the translating caliper are energized to create an attractive force that pulls the translating caliper with the solar array disk toward the fixed caliper. After reaching the fixed caliper, brakes on the fixed caliper are engaged with the disk, brakes on the translating caliper are released from the disk, and the translating caliper is pushed back to the starting location where the process repeats until the desired rotation is completed.

Rau, Scott James

2013-01-29T23:59:59.000Z

472

Water Permits (Louisiana)  

Broader source: Energy.gov [DOE]

The Water Permits Division authorizes permits administered under the Water Quality Regulations. Louisiana's Water Quality Regulations require permits for the discharge of pollutants from any point...

473

Light Water Reactor Sustainability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 Light Water Reactor Sustainability ACCOMPLISHMENTS REPORT 2014 Accomplishments Report | Light Water Reactor Sustainability 2 T he mission of the Light Water Reactor...

474

Fixed time artificial insemination of sheep using cervical and intrauterine insemination techniques  

E-Print Network [OSTI]

as to style and content by: Cha r, Advssory Comm ttee o ttee e er ttee Member Comm ttee Member August 1992 ABSTRACT The objectives of this study are to: 1) compare pregnancy rates of ewes artificially inseminated either at a fixed time or after... the onset of an observed estrus as determined by marker rams, 2) compare pregnancy rates of ewes artificially inseminated by either cervical or laparoscopic methods, 3) compare pregnancy rates of ewes artificially inseminated with different inseminate...

Bell, James H

1992-01-01T23:59:59.000Z

475

Characterization and formation mechanism of nano-structured hydroxyapatite coatings deposited by the liquid precursor plasma spraying process  

Science Journals Connector (OSTI)

Nano-structured hydroxyapatite (HA) coatings were deposited on the Ti-6Al-4V alloy substrate by the liquid precursor plasma spraying (LPPS) process. The thermal behavior of the HA liquid precursor was analyzed to interpret the phase change and structure transformation during the formation process of the nano-structured HA coatings. The phase composition, structure and morphology of the nano-structured HA coatings were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectroscopy. The XRD spectra showed that the coatings deposited by the LPPS process mainly consisted of the HA phase and the crystallite size was measured to be 56 nm. The SEM observation showed that the as-deposited LPPS coatings had small splat size, and nano-scale HA particles were found in certain regions of the coating surface. The FTIR spectroscopy showed the strong presence of the OH? group in the as-deposited LPPS coatings, indicating a superior structural integrity. In addition, the coatings deposited by the LPPS process were also carbonated HA coatings. The results indicate that the LPPS process is a promising plasma spraying technique for depositing nano-structured HA coatings with unique microstructural features that are desirable for improving the biological performance of the HA coatings.

Yi Huang; Lei Song; Tao Huang; Xiaoguang Liu; Yanfeng Xiao; Yao Wu; Fang Wu; Zhongwei Gu

2010-01-01T23:59:59.000Z

476

Fixed endothelial cells exhibit physiologically relevant nanomechanics of the cortical actin web  

Science Journals Connector (OSTI)

It has been unknown whether cells retain their mechanical properties after fixation. Therefore, this study was designed to compare the stiffness properties of the cell cortex (the 50–100 nm thick zone below the plasma membrane) before and after fixation. Atomic force microscopy was used to acquire force indentation curves from which the nanomechanical cell properties were derived. Cells were pretreated with different concentrations of actin destabilizing agent cytochalasin D, which results in a gradual softening of the cell cortex. Then cells were studied 'alive' or 'fixed'. We show that the cortical stiffness of fixed endothelial cells still reports functional properties of the actin web qualitatively comparable to those of living cells. Myosin motor protein activity, tested by blebbistatin inhibition, can only be detected, in terms of cortical mechanics, in living but not in fixed cells. We conclude that fixation interferes with motor proteins while maintaining a functional cortical actin web. Thus, fixation of cells opens up the prospect of differentially studying the actions of cellular myosin and actin.

Kai Bodo Grimm; Hans Oberleithner; Johannes Fels

2014-01-01T23:59:59.000Z

477

Conceptual design of a Ni-based chemical looping combustion process using fixed-beds  

Science Journals Connector (OSTI)

Abstract This work presents a comprehensive conceptual design of a Ni-based chemical looping combustion process (CLC) carried out in fixed bed reactors. The process is intended to exploit the well-known advantages of the Ni/NiO redox system for CLC applications in terms of high reactivity, O2 carrying capacity and chemical and thermal stability. Solutions to the problem of heat management in fixed bed reactors at high temperature and high pressure are described, while a continuous flow of nitrogen for driving a gas turbine is produced. Each reactor involved in the process goes through a cyclic sequence of five reaction and heat transfer stages. Cool product gas recirculations are incorporated into the Ni oxidation and NiO reduction stages in order to moderate the maximum temperatures in the beds and control the displacement of the reaction and heat transfer fronts. A preliminary conceptual design of the process has been carried out to determine the minimum number of reactors needed for continuous operation in typical large-scale CO2 capture systems. Basic reactor models and assumptions based on an ideal plug flow pattern have been used in all the reactors during the chemical reactions and the heat transfer operations. This has made it possible to identify reasonable operating windows for the eight fixed-bed reactors that make up the CO2 capture system, and has demonstrated not only its technical viability but also its great potential for further development.

J.R. Fernández; J.C. Abanades

2014-01-01T23:59:59.000Z

478

A fixed-bed reactor modeling study on the methanation of CO2  

Science Journals Connector (OSTI)

Abstract The methanation of carbon dioxide has gained renewed interest during the last years as a possible technology to synthesize a feasible chemical energy carrier. This modeling study aims at a basic understanding of the aspects relevant for designing an externally cooled fixed-bed reactor for the methanation of a pure, stoichiometric feed gas. It is shown that the reaction rates and the exothermicity (?H° = ?165 kJ/mol) prevent a fixed-bed reactor of technical dimensions to be operated at high conversions without runaway of the reactor. The model predictions of differently detailed pseudo-homogeneous reactor models and a heterogeneous reactor model where the intraparticle transport of mass is described according to a dusty-gas approach are compared to assess the needed level of detail in terms of modeling the heat transfer, fluid flow characteristics and transport resistances on the pellet scale. Under specific conditions, intraparticle mass transfer and external heat transfer need to be considered for describing the temperature and concentration profiles adequately. The study is completed by modeling a fixed-bed membrane reactor as an example of a structured reactor that offers improved temperature control by separated and controlled feeding of hydrogen and carbon dioxide.

David Schlereth; Olaf Hinrichsen

2014-01-01T23:59:59.000Z

479

Photosynthetic water oxidation versus photovoltaic water electrolysis  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

News Media about Center Center Video Library Bisfuel Picture Gallery Photosynthetic water oxidation versus photovoltaic water electrolysis 13 May 2011 Professor Tom Moore, a...

480

Global Water Sustainability:  

Science Journals Connector (OSTI)

...Ground Water and Drinking Water EPA 816-R-04-003...oil and gas produced water treatment. Journal of Hazardous...92-99 Jurenka B (2007) Electrodialysis (ED) and Electrodialysis...usbr.gov/pmts/water/publications/reportpdfs...

Kelvin B. Gregory; Radisav D. Vidic; David A. Dzombak

Note: This page contains sample records for the topic "water spray fixed" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Drinking Water Problems: Lead  

E-Print Network [OSTI]

Lead in drinking water can damage the brain, kidneys, nervous system and red blood cells. This publication explains how lead can enter drinking water, how to have your water tested, and how to eliminate lead from drinking water....

Dozier, Monty; McFarland, Mark L.

2004-02-20T23:59:59.000Z

482

Buildings Energy Data Book: 8.3 Commercial Sector Water Consumption  

Buildings Energy Data Book [EERE]

4 4 Normalized Annual End Uses of Water in Select Supermarkets in Western United States (1) Fixture/End Use Toilets/Urinals Other/Misc. Indoor (2) Cooling Total Building Size (SF) Benchmarking Values for Supermarkets (3) N Indoor Use with Cooling, gal./SF/year 38 Indoor Use with Cooling, gal./SF/daily transaction 38 Note(s): Source(s): 25th Percentile of Users 52 - 64 9 - 16 1) Water use data for the buildings was collected over a few days. Estimates of annual use were created by accounting for seasonal use and other variables, billing data, and interviews with building managers. 2) Includes water for sinks, spraying vegetables, cleaning, etc. 3) The study derived efficiency benchmarks by analyzing measured data and audit data. The benchmark was set at the lower 25th percentile of

483

Water Beetles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Beetles Beetles Nature Bulletin No. 639-A April 29, 1961 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis Supt. of Conservation WATER BEETLES The world is full of beetles. They live everywhere except in the oceans and in the polar regions. There are more of them than any other kind of insect. A quarter of a million species are known and new ones are being discovered every year. Whether it is a microscopic mushroom beetle a hundredth of an inch long, or a giant six-inch Hercules beetle from South America, it can be recognized by its wings. The upper pair forms a hard shell curving like a shield over the thin folded lower wings and the abdomen. In flight, the upper pair is extended like the wings of an airplane and the lower two become buzzing propellers.

484

Water watch  

SciTech Connect (OSTI)

The Hydropower Generation Report provides generation figures for the largest hydropower producers in each of six regions in the US. The report compares, for each month, the amount of hydroelectricity generated (in thousands of megawatt-hours) by each producers in the last two years to the ten-year average for that month. This database is used to figure long-term generation averages and percent of averages. The producers regularly provide current generation data to update the database. This issue of [open quotes]Water Watch[close quotes] focuses on winter snow conditions across the US as of mid-January. In addition, the department provides an outlook of spring flood potential. The information presented is based on data from the US Geological Survey, the National Weather Service, and the Soil Conservation Service.

Not Available

1991-02-01T23:59:59.000Z

485

Water Power Program: Publications  

Energy Savers [EERE]

Water Power Program HOME ABOUT RESEARCH & DEVELOPMENT FINANCIAL OPPORTUNITIES INFORMATION RESOURCES NEWS EVENTS EERE Water Power Program Information Resources Publications...

486

Water Sustainability Program Challenges to Sustainable Water  

E-Print Network [OSTI]

· Drought, Climate Change · Growth and the need for additional supplies · Water and Energy · Water the Southwest, nation, semi-arid and arid regions, and the world. · Today's program provides just a glimpse to and utilization of renewable supplies · Transboundary water issues · The surface water/groundwater interface

Cushing, Jim. M.

487

Water Resources Policy & Economics  

E-Print Network [OSTI]

Water Resources Policy & Economics FOR 4984 Selected Course Topics · Appropriative and riparian water institutions · Incentives for conservation · Water rights for in-stream environmental use · Surface water-groundwater management · Water quality regulations · Water markets · Economic and policy

Buehrer, R. Michael

488

Water Heating | Department of Energy  

Energy Savers [EERE]

Energy Saver Water Heating Water Heating Infographic: Water Heaters 101 Infographic: Water Heaters 101 Everything you need to know about saving money on water heating costs....

489

Water Footprint | Argonne National Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Footprint Blue water represents water withdrawn from surface water and groundwater for feedstock irrigation and refinery processing. Blue water represents water withdrawn from...

490

Relative performance of alumina coatings prepared by micro arc oxidation and detonation gun spray on AA 6063 under plain fatigue and fretting fatigue loading  

Science Journals Connector (OSTI)

The present study compares the performance of alumina coatings prepared by two different methods (micro arc oxidation (MAO) and detonation gun (D-gun...2O3 and ?-Al2O3, D-gun sprayed coating contained ?-Al2O3 wit...

S. Ganesh Sundara Raman; B. Rajasekaran

2008-12-01T23:59:59.000Z

491

438 IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING, VOL. 8, NO. 2, APRIL 2011 Optimal Paint Gun Orientation in Spray Paint  

E-Print Network [OSTI]

and simulations indicate that the proposed method allows a robotic ma- nipulator to paint a given surface using of tasks where the robot is to hold a pointing device, such as a painting gun or a heating device, we show different spray paint algorithms and running these on a robot manipulator in our lab. The al- gorithms

Gravdahl, Jan Tommy

492

Development and Validation of an RP-HPLC Method to Quantitate Acyclovir in Cross-Linked Chitosan Microspheres Produced by Spray Drying  

Science Journals Connector (OSTI)

......ACV) in cross-linked chitosan microspheres produced by spray...coefficient of 0.9999. The chitosan and the tripolyphosphate in...quantitate ACV in cross-linked chitosan microspheres. Introduction...activity. It is a highly potent inhibitor of herpes simplex virus......

Hellen Karine Stulzer; Monika Piazzon Tagliari; Fábio S. Murakami; Marcos A.S. Silva; Mauro C.M. Laranjeira

2008-07-01T23:59:59.000Z

493

ILASS Americas 17th Annual Conference on Liquid Atomization and Spray Systems, Arlington, VA, May 2004 Optimal Disturbance Structure and Development on a Sheared Interface  

E-Print Network [OSTI]

ILASS Americas 17th Annual Conference on Liquid Atomization and Spray Systems, Arlington, VA, May, viscosity and mean velocity all change. In the immediate vicinity of the interface, boundary layer flow thickness), density ratio r = 0.02 and viscosity ratio m = 0.025. The OD of this two-phase flow show some

Yecko, Philip

494

Fixed Monthly Living Expense Payments at the Lawrence Livermore National Laboratory, INS-L-11-05  

Broader source: Energy.gov (indexed) [DOE]

Fixed Monthly Living Expense Fixed Monthly Living Expense Payments at the Lawrence Livermore National Laboratory INS-L-11-05 September 2011 Department of Energy Washington, DC 20585 September 21, 2011 MEMORANDUM FOR MANAGER, LIVERMORE SITE OFFICE FROM: Sandra D. Bruce Assistant Inspector General for Inspections SUBJECT: INFORMATION: Inspection Report on "Fixed Monthly Living Expense Payments at the Lawrence Livermore National Laboratory" BACKGROUND The Lawrence Livermore National Laboratory (Livermore) is a Department of Energy (Department) laboratory managed and operated by Lawrence Livermore National Security, LLC, for the Department's National Nuclear Security Administration (NNSA). Livermore's mission is to ensure the safety and security of the nation through applied science and technology in key

495

A Physically Based Framework for Modelling the Organic Fractionation of Sea Spray Aerosol from Bubble Film Langmuir Equilibria  

SciTech Connect (OSTI)

The presence of a large fraction of organic matter in primary sea spray aerosol (SSA) can strongly affect its cloud condensation nuclei activity and interactions with marine clouds. Global climate models require new parameterizations of the SSA composition in order to improve the representation of these processes. Existing proposals for such a parameterization use remotely-sensed chlorophyll-a concentrations as a proxy for the biogenic contribution to the aerosol. However, both observations and theoretical considerations suggest that existing relationships with chlorophyll-a, derived from observations at only a few locations, may not be representative for all ocean regions. We introduce a novel framework for parameterizing the fractionation of marine organic matter into SSA based on a competitive Langmuir adsorption equilibrium at bubble surfaces. Marine organic matter is partitioned into classes with differing molecular weights, surface excesses, and Langmuir adsorption parameters. The classes include a lipid-like mixture associated with labile dissolved organic carbon (DOC), a polysaccharide-like mixture associated primarily with semi-labile DOC, a protein-like mixture with concentrations intermediate between lipids and polysaccharides, a processed mixture associated with recalcitrant surface DOC, and a deep abyssal humic-like mixture. Box model calculations have been performed for several cases of organic adsorption to illustrate the underlying concepts. We then apply the framework to output from a global marine biogeochemistry model, by partitioning total dissolved organic carbon into several classes of macromolecule. Each class is represented by model compounds with physical and chemical properties based on existing laboratory data. This allows us to globally map the predicted organic mass fraction of the nascent submicron sea spray aerosol. Predicted relationships between chlorophyll-\\textit{a} and organic fraction are similar to existing empirical parameterizations, but can vary between biologically productive and non-productive regions, and seasonally within a given region. Major uncertainties include the bubble film thickness at bursting and the variability of organic surfactant activity in the ocean, which is poorly constrained. In addition, marine colloids and cooperative adsorption of polysaccharides may make important contributions to the aerosol, but are not included here. This organic fractionation framework is an initial step towards a closer linking of ocean biogeochemistry and aerosol chemical composition in Earth system models. Future work should focus on improving constraints on model parameters through new laboratory experiments or through empirical fitting to observed relationships in the real ocean and atmosphere, as well as on atmospheric implications of the variable composition of organic matter in sea spray.

Burrows, Susannah M.; Ogunro, O.; Frossard, Amanda; Russell, Lynn M.; Rasch, Philip J.; Elliott, S.

2014-12-19T23:59:59.000Z

496

Property:OpenEI/UtilityRate/FixedDemandChargeMonth1 | Open Energy  

Open Energy Info (EERE)

Fixed Demand Charge Month 1 Fixed Demand Charge Month 1 Pages using the property "OpenEI/UtilityRate/FixedDemandChargeMonth1" Showing 25 pages using this property. (previous 25) (next 25) 0 0000827d-84d0-453d-b659-b86869323897 + 7 + 00101108-073b-4503-9cd4-01769611c26f + 1.71 + 0030a241-5084-4404-9fe4-ed558aad8b59 + 8.28 + 0049111b-fba2-46ba-827d-7ce95609a1d9 + 9.51 + 0055db46-f535-4dc9-a192-920d1bdf382b + 3.2 + 0070a37f-0d41-4331-8115-df40c62e00f3 + 13.24 + 007f7b1f-0cba-450c-9023-df962aa387a4 + 5.28 + 008960d4-14ad-4822-b293-140640cf0bcf + 4.924 + 00cdded9-47a1-49b6-a217-10941ffbefc6 + 1.468 + 00e0b930-90c6-43c2-971a-91dade33f76a + 3.35 + 010f37ad-90a9-4aa8-bbdf-c55e72ee1495 + 4.74 + 017a32a0-140a-4e0b-a10c-f6f67905829c + 4.5 + 019941c8-cc3b-452c-b12e-201301099603 + 11.95 +

497

EER of fixed and trainable fusion classifiers: A theoretical study with application to biometric authentication tasks  

E-Print Network [OSTI]

Biometric authentication is a process of verifying an identity claim using a person’s behavioural and physiological characteristics. Due to the vulnerability of the system to environmental noise and variation caused by the user, fusion of several biometric-enabled systems is identified as a promising solution. In the literature, various fixed rules (e.g. min, max, median, mean) and trainable classifiers (e.g. linear combination of scores or weighted sum) are used to combine the scores of several base-systems. How exactly do correlation and imbalance nature of base-system performance affect the fixed rules and trainable classifiers? We study these joint aspects using the commonly used error measurement in biometric authentication, namely Equal Error Rate (EER). Similar to several previous studies in the literature, the central assumption used here is that the class-dependent scores of a biometric system are approximately normally distributed. However, different from them, the novelty of this study is to make a direct link between the EER measure and the fusion schemes mentioned. Both synthetic and real experiments (with as many as 256 fusion experiments carried out on the XM2VTS benchmark score-level fusion data sets) verify our proposed theoretical modeling of EER of the two families of combination scheme. In particular, it is found that weighted sum can provide the best generalisation performance when its weights are estimated correctly. It also has the additional advantage that score normalisation prior to fusion is not needed, contrary to the rest of fixed fusion rules.

Norman Poh; Samy Bengio

2005-01-01T23:59:59.000Z

498

EER of Fixed and Trainable Fusion Classifiers: A Theoretical Study with Application to Biometric Authentication Tasks  

E-Print Network [OSTI]

submitted for publication Abstract. Biometric authentication is a process of verifying an identity claim using a person’s behavioural and physiological characteristics. Due to the vulnerability of the system to environmental noise and variation caused by the user, fusion of several biometric-enabled systems is identified as a promising solution. In the literature, various fixed rules (e.g. min, max, median, mean) and trainable classifiers (e.g. linear combination of scores or weighted sum) are used to combine the scores of several base-systems. How exactly do correlation and imbalance nature of base-system performance affect the fixed rules and trainable classifiers? We study these joint aspects using the commonly used error measurement in biometric authentication, namely Equal Error Rate (EER). Similar to several previous studies in the literature, the central assumption used here is that the class-dependent scores of a biometric system are approximately normally distributed. However, different from them, the novelty of this study is to make a direct link between the EER measure and the fusion schemes mentioned. Both synthetic and real experiments (with as many as 512 fusion experiments carried out on the XM2VTS benchmark score-level fusion data sets) verify our proposed theoretical modeling of EER of the two families of combination scheme. In particular, it is found that weighted sum can provide the best generalisation performance when its weights are estimated correctly. It also has the additional advantage that score normalisation prior to fusion is not needed, contrary to the rest of fixed fusion rules. 2 IDIAP–RR 05-01 1

Norman Poh A; Samy Bengio A; Norman Poh; Samy Bengio

2005-01-01T23:59:59.000Z

499

Salt spray testing of sacrificial and barrier type coatings for the purpose of finding a corrosion resistant and environmentally acceptable replacement for cadmium plate  

SciTech Connect (OSTI)

Cadmium plate is used to protect various components of offshore oil and gas production equipment from surface marine environments such as salt spray. This research project was performed to find an environmentally acceptable coating which provides equivalent or superior resistance to surface marine corrosion when compared to cadmium plate. In order to find a replacement for cadmium plate, a large number of sacrificial and barrier type coatings were exposed to an accelerated salt spray test in accordance with ASTM B117-94. The only sacrificial coating which resisted 1,000 hours of accelerated salt spray testing without any indication of failure was the 0.0006-in. thick zinc-nickel plate with an olive drab chromate treatment. Based on these test results, zinc-nickel plate is recommended as a corrosion resistant and environmentally acceptable replacement for cadmium plate for use in surface marine environments. Electroless nickel coatings with a minimum applied thickness of 0.002-in. also resisted 1,000 hours of accelerated salt spray testing without indication of failure. Electroless nickel is not recommended for corrosion resistance in salt spray environments for two reasons. Electroless nickel is susceptible to microcracking when heat treated at moderate to high temperatures. Heat treatment improves the hardness and resultant wear resistance of the coating. Microcracking will compromise the integrity of the coating resulting in pitting, cracking or crevice corrosion of the substrate in corrosive environments. Secondly, any significant mechanical damage to the coating or disbonding of the coating substrate interface will also result in corrosive attack of the substrate.

Schultz, E.J.; Haeberle, T.

1996-12-31T23:59:59.000Z

500

Preparation of feedstocks from nano/submicron-sized TiO2 particles to obtain photocatalytic coatings by atmospheric plasma spraying  

Science Journals Connector (OSTI)

Abstract Atmospheric plasma spraying (APS) has been proved useful in obtaining TiO2 coatings with effective photocatalytic activity. However, the influence of feedstock characteristics on photocatalytic activity has hardly been addressed. This study was undertaken to prepare TiO2 photocatalytic coatings by APS from different feedstocks. The feedstocks were obtained by spray drying suspensions of a nano- and a submicron-sized TiO2 powder, with different solids contents and/or ratios of the nano- to submicron-sized particles. All the resulting powders were fully characterised to assess their suitability for use in APS processes. Feedstock powders were then deposited on steel coupons by APS using hydrogen or helium as secondary plasma gas. Coating microstructure and phase composition were characterised. Coating photocatalytic activity was determined by measuring the degradation of methylene blue dye in an aqueous solution. Powder characterisation showed that all feedstocks met plasma spray operation requirements with regard to agglomerate size distribution and density, as well as to powder flowability. Optimum agglomerate density was obtained when a well-balanced mixture of nano- and submicron-sized particles was used. All coatings displayed a bimodal microstructure with partially melted agglomerates that retained the initial nano- or submicron-sized structure and composition (anatase phase) of the feedstock, surrounded by a fully melted matrix mainly formed by rutile. As expected, coating porosity as well as the amount of partially melted areas depended strongly on plasma spray conditions and on feedstock characteristics. With regard to photocatalytic activity, a reasonably good fit of a first-order kinetic model to the experimental data was found for all coatings. The kinetic constants obtained displayed higher values than those of a commercial sol–gel coating. The values of these constants were related to feedstock characteristics as well as to plasma spraying conditions on the basis of anatase content. The contribution of other factors to the resulting coating surface is also discussed.

Mari Carmen Bordes; Mónica Vicent; Arnaldo Moreno; Verónica López; Rodrigo Moreno; Marí;a Dolores Salvador; Rut Benavente; Enrique Sánchez

2014-01-01T23:59:59.000Z